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{{DISPLAYTITLE:Rolex 6105 Datejust}}
{{#seo:
{{#seo:
|title=Rolex Datejust "Ovettone" 6105 (First Dial-Signed Datejust) — BezelBase
|title=Rolex Datejust 6105 — Production, Dials & Serial Ranges | Rolexopedia
|description=The 6105 is where the Datejust finally gets its name. The concept already existed, but this is the first reference that actually prints Datejust on the dial.
|description=The 6105 is an early Datejust with the name printed on the dial. Auction records place it beside the 6075, where one restored dial also shows Datejust wording.
|image=Ref6105_bobswatches_123973.jpg
|image_alt=Rolex Datejust 6105 with Datejust text on the dial
|type=Article
|og_type=article
|published_time=2026-04-17T21:45:31Z
|modified_time=2026-08-04T00:13:30Z
|robots=index,follow,max-image-preview:large
}}


[[File:Ref6105_bobswatches_123973.jpg|thumb|right|340px|alt=Rolex Datejust 6105 — the first Rolex reference with 'Datejust' on the dial|Rolex Datejust 6105 — the first Rolex reference with 'Datejust' on the dial (c.1950-1953)]]
<small>Datejust → '''6105'''</small>
<small>Datejust → '''6105'''</small>


The 6105 is where the Datejust finally gets its name. The concept had existed since 1945. The 4467 invented it, the 5028 omitted it, and the 5030, 5031, 6030, 6031, 6074, and 6075 iterated on it. But through all of that the dials said “Oyster Perpetual” and nothing more. An owner of a 1946 Datejust owned a Datejust only by catalog reference; the watch itself did not say so. The 6105 ends that. Introduced at the turn of the 1950s in the same 36mm Big Bubbleback case the Ovettone family had been using for five years, it is the first Rolex reference to print ''Datejust'' on the dial. Everything else about the watch (the gradual date change, the reeded bezel, the gold-only bias, the domed caseback) is inherited from its predecessors. What is new is the word.
<div class="rp-lead">
[[File:Ref6105_bobswatches_123973.jpg|thumb|center|640px|alt=Rolex Datejust 6105 with Datejust text on the dial|Rolex Datejust 6105 with Datejust text on the dial]]
</div>
 
The 6105 is an early Datejust reference with the name printed on the dial. Auction catalogues place examples in the early 1950s and identify A.296 and 745-family movements. Antiquorum’s [https://catalog.antiquorum.swiss/en/lots/rolex-lot-108-122 photograph of ref. 6075 case 685082] shows the same word, but the catalogue grades that dial restored. That image does not establish factory fitment. Collectors often credit the 6105 as the first dial-signed Datejust, but the earliest factory use of the name remains unresolved.


<span id="core-facts"></span>
<span id="core-facts"></span>
== Core facts ==
==Core facts==
 
{| class="wikitable rp-facts"
{| class="wikitable"
|-
|-
! detail
! detail
Line 23: Line 34:
|-
|-
| production
| production
| approximately 1950–1953 (sources vary; 1953–1955 also documented)
| about 1950–1953 (sources vary; 1953–1955 also documented)
|-
|-
| case diameter
| case diameter
Line 41: Line 52:
|-
|-
| crown
| crown
| screw-down brevet, “Rolex + Oyster” cross-center
| screw-down brevet, "Rolex + Oyster" cross-center
|-
|-
| movement
| movement
Line 47: Line 58:
|-
|-
| date complication
| date complication
| yes — date at 3 o’clock, gradual change around midnight
| yes — date at 3 o'clock, gradual change around midnight
|-
|-
| Cyclops
| Cyclops
Line 55: Line 66:
| no (introduced with Cal. 1065 in refs 6604/6605, 1956–57)
| no (introduced with Cal. 1065 in refs 6604/6605, 1956–57)
|-
|-
| “Datejust” text on dial
| "Datejust" text on dial
| yes — first reference to carry it
| yes — present on documented 6105 examples; often credited as first, but an earlier 6075 dial photograph is catalogued as restored
|-
|-
| notable configurations
| notable configurations
| left-handed “destro” crown-at-9 variant; Serpico y Laino co-signed; black gilt dial
| left-handed "destro" crown-at-9 variant; Serpico y Laino co-signed; black gilt dial
|}
|}


<span id="what-the-6105-is"></span>
<span id="what-the-6105-is"></span>
== What the 6105 is ==
==What the 6105 is==
The 6105 continues the 6074 and 6075 in the early Datejust line. It keeps the 36mm Ovettone case, the reeded coin-edge bezel, the domed screw-down back, the Jubilee option and the date window at 3 o'clock without a magnifier. Auction catalogues identify A.296 and 745-family movements in 6105 examples. Its documented dials carry ''Datejust'' text; the restored 6075 dial discussed below does not establish that the same wording was factory-fitted to that earlier case.


The 6105 is a successor reference. Everything architectural about it — the 36mm Ovettone case, the reeded coin-edge bezel, the domed screw-down caseback, the Jubilee bracelet option, the date window at 3 o’clock without a magnifier — carries forward unchanged from the 6074 and 6075 that preceded it. The movement evolves one increment, from A.295 to A.296, but both are Aegler automatics from the same family, sized by their diameter to the nearest tenth of a millimeter, and both drive the same slow-creep date mechanism. The 6105 is a continuation rather than a redesign.
Collectors often credit the 6105 as the first reference with the model name printed on its dial. The auction examples cited here do not establish the earliest factory use.
 
What the 6105 really resolves is a naming problem. Earlier watches were Datejusts by catalog logic. The 6105 is the point where Rolex finally writes the name on the watch itself.
 
Why Rolex waited five years to put ''Datejust'' on the dial is not documented in any public source. The best working theory is commercial: Wilsdorf took his time promoting a new model name to the dial level until the complication it described had stabilized into a recognizable category. By the start of the 1950s, the automatic date-at-three-with-chronometer format had iterated through seven references and several hundred units of production. It was no longer an anniversary novelty. It was a line. The 6105 announces as much, in script, under the chapter ring.


<span id="placing-the-6105-in-the-ovettone-sequence"></span>
<span id="placing-the-6105-in-the-ovettone-sequence"></span>
== Placing the 6105 in the Ovettone sequence ==
==Placing the 6105 in the Ovettone sequence==
The 6105 sits among the Big Bubbleback references that preceded the later Datejust cases. The working sequence runs from the 1945 4467 through the 5028, 5030 and 5031, then the 6030/6031 pair and 6074/6075, with the 6105 in the early 1950s. Auction dates overlap and do not establish a precise factory changeover from one dial inscription to another. Later 6305 examples add the Cyclops; the 6604/6605 generation uses Cal. 1065 for instantaneous date change.


The reference sits in a specific slot within the Big Bubbleback family that preceded the modern Datejust. The full sequence, as the collector community reconstructs it, runs: 4467 (1945), 5028 / 5030 / 5031 (1946–48), 6030 / 6031 (1949), 6074 / 6075 (1950), 6105 (first "Datejust" text, approximately 1950–53), 6305 (first Cyclops, 1954), 6604 / 6605 (first instantaneous date via Cal. 1065, 1956–57). That arc takes the Datejust from anniversary commemorative to the mid-century dress watch Rolex still builds today.
The 6105 sits on the edge of the Ovettone family. Some writers fold it in without hesitation, others treat it as a late continuation rather than a core member. Either way, it is clearly part of the same 36mm Big Bubbleback Datejust story.
 
The 6105 is not always described as a “true Ovettone.” The narrowest scholarly reading, documented by Le Monde Edmond, restricts the term to four references: 4467, 6031, 6074, and 6075. By that reading, the 6105 is already one step out of the core Ovettone cluster, a late continuation rather than a canonical member. The broader collector and Italian-auction usage (Pandolfini, Aste Bolaffi, and most dealer copy) includes the 6105 in the Ovettone family without hesitation, on the grounds that it shares the 36mm case, the domed caseback, and the direct-lineage movement. Both framings appear in source material. The 6105 sits at the boundary.


<span id="the-36mm-big-bubbleback-case"></span>
<span id="the-36mm-big-bubbleback-case"></span>
== The 36mm Big Bubbleback case ==
==The 36mm Big Bubbleback case==
 
Case architecture on the 6105 is the Ovettone profile the 4467 established in 1945. Three-piece Oyster construction (bezel, mid-case, screw-down caseback) with a 36mm diameter tonneau form and the characteristic domed caseback that houses the rotor. The bezel is a thin reeded or milled coin-edge in matching gold, functionally identical to the 4467's and visually a direct precursor to the Datejust fluted bezel that crystallizes by the 1960s. The crystal is acrylic and domed, the crown a screw-down brevet marked "Rolex + Oyster" with cross-center. The 6105 keeps the 36mm Ovettone case used by the 4467, rather than the smaller 32mm Bubbleback case. The 6305 (1954) inherits this case profile almost unchanged, and the 1601 family of the 1960s refines it further. The 6105 is documented with Datejust text. Its position alongside the 6075 is less tidy than a simple unmarked-to-marked sequence suggests: a published 6075 dial photograph shows the word, but the auction house calls that dial restored.
Case architecture on the 6105 is the Ovettone profile the 4467 established in 1945. Three-piece Oyster construction (bezel, mid-case, screw-down caseback) with a 36mm diameter tonneau form and the characteristic domed caseback that houses the rotor. The bezel is a thin reeded or milled coin-edge in matching gold, functionally identical to the 4467’s and visually a direct precursor to the Datejust fluted bezel that crystallizes by the 1960s. The crystal is acrylic and domed, the crown a screw-down brevet marked “Rolex + Oyster” with cross-center. None of this is new.
 
The case shape is the one meaningful continuity from the 4467. A 36mm Ovettone reads differently on the wrist from a standard 32mm Bubbleback. It is still domed, still unmistakably an early automatic Rolex, but its proportions already point at the modern Datejust. The 6305 (1954) inherits this case profile almost unchanged, and the 1601 family of the 1960s refines it further. The 6105’s contribution to that lineage is not the case, which it inherits, but the dial text that names what the case has been carrying for half a decade.


One variant sits on top of this otherwise conventional architecture: the left-handed destro case. It is rare enough to matter, and it puts the 6105 into the short list of early left-crown Rolex references.
One variant sits on top of this otherwise conventional architecture: the left-handed destro case. It is rare enough to matter, and it puts the 6105 into the short list of early left-crown Rolex references.


<span id="precious-metal-and-the-configuration-space"></span>
<span id="precious-metal-and-the-configuration-space"></span>
== Precious metal and the configuration space ==
==Precious metal and the configuration space==
 
The 6105 is gold-dominant. 18K yellow gold is the most common configuration by a wide margin, and 18K pink or rose gold follows, with a smaller surviving population. Two-tone 18K yellow gold and steel examples are documented on 6105 cases and represent an early precursor to what becomes the Rolesor format on later Datejusts. A pure steel 6105 is less clearly documented than the yellow or pink gold variants; the Ovettone production bias toward precious metal is consistent with the 4467 era and only begins to loosen in the 6305 era.
The 6105 is gold-dominant. 18K yellow gold is the most common configuration by a wide margin, and 18K pink or rose gold follows, with a smaller surviving population. Two-tone 18K yellow gold and steel examples are documented on 6105 cases and represent an early precursor to what becomes the Rolesor format on later Datejusts. A pure steel 6105 is less clearly documented than the yellow or pink gold variants; the Ovettone production bias toward precious metal is consistent with the 4467 era and only begins to loosen in the 6305 era.


The 6105 dial range is wider than the 4467's. Cream and silvered dials are the standard look, black gilt is the glamour variant, and honeycomb dials are rarer still. That spread is one reason the reference keeps more life than its auction numbers suggest.
The 6105 dial range is wider than the 4467's. Cream and silvered dials are the standard look, black gilt is the glamour variant, and honeycomb dials are rarer still. Hands across the range are gold, alpha or dauphine on most examples, with luminous inserts on the sportier configurations and plain polished hands on dress variants. Date wheels are typically black-on-white; roulette wheels (red/black alternating) still appear on some earlier 6105 examples, carried over from the late-4467 era before settling into standard black numerals as the 1950s progressed.
 
Hands across the range are gold, alpha or dauphine on most examples, with luminous inserts on the sportier configurations and plain polished hands on dress variants. Date wheels are typically black-on-white; roulette wheels (red/black alternating) still appear on some earlier 6105 examples, carried over from the late-4467 era before settling into standard black numerals as the 1950s progressed.


A specific sub-configuration worth documenting is the Serpico y Laino co-signed variant. Serpico y Laino was the exclusive Rolex and Patek Philippe importer for Venezuela between 1925 and 1966, and Rolex permitted the Caracas retailer to co-sign dials of many references during that window. The 6105 appears on the Serpico y Laino reference list alongside 3132, 3359, 3372, 3458, 6062, 6204, 6542, 6567, 6605, 6634, 1803, and 2526, putting the 6105 firmly within the Caracas retailer’s distribution footprint for early Datejusts. A 6105 with authenticated Serpico y Laino dial marking carries a meaningful premium over an unsigned equivalent.
A Serpico y Laino signature is an individual retailer attribution. Its originality and fitment need image-backed provenance.


<span id="movement-cal.-a.296"></span>
<span id="movement-cal.-a.296"></span>
== Movement: Cal. A.296 ==
==Movement: Cal. A.296==
 
The cited 6105 catalogues identify Cal. A.296, an early Aegler automatic movement used in this period. "A.296" denotes the movement's 29.6mm diameter. Rolex's parts-catalog nomenclature lists the same movement within the 740/745 family, consistent with how the 4467's A.295 appears as Cal. 740/745 in the same catalogs. The parts-catalogue names refer to the same movement family; the cited lots identify the movement as A.296.
The 6105 uses Cal. A.296, the next step up from the 4467’s A.295 in the Aegler automatic family that powered the Ovettone references through the early 1950s. “A.296” denotes the movement’s 29.6mm diameter. Rolex’s parts-catalog nomenclature lists the same movement within the 740/745 family, consistent with how the 4467’s A.295 appears as Cal. 740/745 in the same catalogs. The naming conventions run in parallel; the movement is one movement.


A.296 is the expected movement here: 18 jewels, unidirectional winding, no shock protection, and the same gradual date change the earlier Big Bubblebacks used. The fast takeaway is that the 6105 still belongs mechanically to the Bubbleback world, even as the Datejust name finally appears.
The cited examples list 18 jewels. The available lot descriptions do not establish a universal winding direction, shock-protection specification or date-change behaviour for every 6105. The 6105 remains mechanically part of the Bubbleback generation while the Datejust name appears on its documented dials.


One detail matters for authentication on 6105 and 4467 examples alike: dial feet positions differ between A.295 and A.296, and dials are therefore not interchangeable between 4467 and 6105 cases. The point was documented on the Vintage Rolex Forum (thread t-274914) by forum specialist Xeramic and is the standard check when evaluating claimed original-dial 6105 examples. A 6105 dial on a 4467 movement, or vice versa, is a service refit rather than period-correct. On reputable-dealer listings and major auction catalogs, dial-foot position is assumed verified; on private-market and forum-sale examples, buyers will want confirmation.
One detail matters for authentication on 6105 and 4467 examples alike: the dial feet differ between A.295 and A.296, so the two references do not share period-correct dials.


<span id="the-dial-text-what-datejust-looks-like-on-the-6105"></span>
<span id="the-dial-text-what-datejust-looks-like-on-the-6105"></span>
== The dial text: what “Datejust” looks like on the 6105 ==
==The dial text: what "Datejust" looks like on the 6105==
 
Datejust is printed on the documented 6105 dials. It identifies the model on the face of the watch, but the available 6075 auction record prevents an unqualified claim that 6105 is the first reference ever to show the word. Antiquorum's photographed 6075 case 685082 carries the text; the catalogue grades that dial restored, so it remains unclear whether this was factory fitment or later work.
Dial layout on a 6105 follows the standard Rolex Oyster Perpetual arrangement of the period: “ROLEX” centered under the coronet at twelve, “Oyster Perpetual” in a line below it, the date window at three, with one addition. Above six o’clock, where earlier references printed “Chronometer” or “Certified Chronometer” and nothing else, the 6105 adds “Datejust” as a second line of text. The word is rendered in script on most examples, consistent with the dial script that carries forward into the 6305 and 6604/6605 successors and, from there, into the entire modern Datejust line.
 
The addition sounds small. On the wrist and in photographs it is the single feature that distinguishes a 6105 from a 6075 at a glance. The prior reference, in otherwise nearly identical gold Ovettone form, has everything the 6105 has except the word. Collectors who encounter a 6075 and a 6105 side by side will find the difference lives entirely in that one script line above six. The case is the same. The movement is the same family. The bracelet, the bezel, the hands, the markers are all the same. The dial text is the change, and it is what the reference is remembered for.
 
The format also anchors what the word “Datejust” will look like on Rolex dials going forward. By the 1960s the script “Datejust” above six becomes a recognizable signature element, as specifically Datejust as the fluted bezel itself. Its first appearance is here, on the 6105.


<span id="collecting-and-auction-context"></span>
<span id="collecting-and-auction-context"></span>
== Collecting and auction context ==
==Collecting and auction context==
 
Auction prices vary with case metal, dial and condition. The cited sales cover different metals, dials and dates, so they document individual results rather than a stable market range or ranking. Case condition, dial originality, metal and accessories affect each result.
The 6105 does not reach 4467 money, but the spread is still real. Yellow gold is the baseline, pink gold carries a premium, black gilt dials carry more, and Serpico or destro examples sit above that again. The rarest watches trade too infrequently to set a stable price.
 
The market position is stable rather than volatile. Like the broader Ovettone segment, the 6105 has not been the speculative focus of the post-2018 vintage boom, which concentrated on steel sport references: Submariners, GMT-Masters, Daytonas. Gold Ovettone watches have appreciated steadily and quietly. For a collector drawn to historical significance rather than market momentum, the 6105 occupies a specific slot. It is the first reference where the Datejust is what its name says it is, for meaningfully less than a 4467 souscription or a 6305 first-Cyclops example commands.
 
Auction coverage is thinner than for the 4467. The practical split is enough: ordinary yellow gold at the baseline, black gilt and signed-dial watches above it, and the rarest destro pieces beyond normal pricing ranges.


<span id="authentication-priorities"></span>
<span id="authentication-priorities"></span>
== Authentication priorities ==
==Authentication priorities==
Check a 6105 through its movement, dial, case, metal and bracelet, with special attention to the dial-foot position.


Authenticating a 6105 follows the same playbook as the rest of the Ovettone family, with one addition specific to this reference.
The cited 6105 lots identify A.296 (Cal. 745, or the 740/745 family in parts-catalog form). A catalogued A.295 or later caliber needs an explanation as a replacement, a misidentification, or a case mismatch. Movement architecture should match the period documentation.


Movement should be A.296 (Cal. 745, or the 740/745 family in parts-catalog form); an A.295 in a 6105 case is a service-swap or a misidentified movement, as is a later caliber entirely. Movement architecture (unidirectional rotor, no shock protection, no quickset) should match period documentation.
Dial feet position is the defining 6105-versus-4467 authentication check. A.295 and A.296 dial feet sit in different positions, and a 6105 dial on a 4467 movement (or vice versa) is not period-correct.  
 
Dial text: "Datejust" above six is the reference-defining feature. A 6105 listing without that text needs an explanation, such as a replacement dial, a case mismatch or a catalogue error.
Dial feet position is the defining 6105-versus-4467 authentication check. A.295 and A.296 dial feet sit in different positions, and a 6105 dial on a 4467 movement (or vice versa) is not period-correct. On reputable dealer and auction examples this is verified as standard; on private-market listings the buyer should confirm.
 
Dial text: "Datejust" above six is the reference-defining feature. Some dealers list Ovettone-era watches as 6105 when the dial lacks "Datejust" text, a catalog error rather than a rare variant. A 6105 without "Datejust" on the dial needs explanation.


Case material is 18K yellow, 18K pink, or documented two-tone. A steel-only 6105 needs scrutiny against period documentation; the Ovettone bias toward gold is consistent with the 4467 era and only genuinely breaks with the 6305 that follows.
Case material is 18K yellow, 18K pink, or documented two-tone. A steel-only 6105 needs scrutiny against period documentation; the Ovettone bias toward gold is consistent with the 4467 era and only genuinely breaks with the 6305 that follows.
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<span id="what-the-6105-established"></span>
<span id="what-the-6105-established"></span>
== What the 6105 established ==
==What the 6105 established==
The 6105 is an early Datejust reference with the model name printed on documented dials. It is often cited as the first such reference. A photographed 6075 carries the same wording, but its dial was graded restored and cannot establish original fitment. The earliest factory use of the text remains unresolved.


The 6105 establishes one thing primarily: the word "Datejust" as a standing dial feature. That is not a mechanical contribution. The reference adds no movement architecture, no case innovation, no bracelet format the Ovettone run had not already delivered. In dial-text terms, though, it is where the visible Datejust identity descends from. Every Rolex Datejust from the 6305 through the current 126234 carries "Datejust" printed on the dial. That starts here.


The reference also consolidates the Ovettone-era Datejust as a named product category rather than a complication. Before the 6105, a Datejust was a watch with an automatic date and the name lived in the sales literature. After the 6105, a Datejust is a watch that says so on its face. In practice, this is the moment the Datejust becomes a model.
==Auction record==
{| class="wikitable"
! source !! example !! result or estimate
|-
| [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6105-oyster-perpetual-lot-372-281 Antiquorum, lot 281] || circa 1950, pink gold, case 791548, black dial, A296, 36 mm || CHF 16,250
|-
| [https://www.monacolegendauctions.com/auction/exclusive-timepieces-37/lot-125 Monaco Legend, lot 125] || 1951, pink gold, case 837513, A.296, 36 mm || CHF 12,500 incl. premium
|-
| [https://www.christies.com/en/lot/lot-5091513 Christie’s] || circa 1952, 18K gold, case 820172, black dial, A.296, 35 mm || estimate US$6,500–9,000
|-
| [https://www.monacolegendauctions.com/auction/exclusive-timepieces-25/lot-272 Monaco Legend, lot 272] || 1953, yellow gold, case 971852, A.296, 36 mm, box and tag || €268,750 incl. premium
|}
 
==Related references==
See also the [[Reference:Movements|movement reference]], [[Reference:Bracelets|bracelet & clasp guide]], and [[Reference:Serial-numbers|serial numbers by year]].


== Sources ==
== Sources ==
* The Vintage Rolex Field Manual, Chevalier Edition — unknown, Morning Tundra
* [https://catalog.antiquorum.swiss/en/lots/rolex-lot-108-122 Antiquorum Geneva, 14 May 2006, lot 122, ref. 6075 case 685082] — photograph shows Datejust text; catalogue grades the dial restored.
* ''The Vintage Rolex Field Manual'' — Colin A. White, Morning Tundra
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-6105-oyster-perpetual-lot-372-281 Antiquorum, lot 281 — ref. 6105, circa 1950]
* [https://www.monacolegendauctions.com/auction/exclusive-timepieces-37/lot-125 Monaco Legend, lot 125 — ref. 6105, 1951]
* [https://www.christies.com/en/lot/lot-5091513 Christie’s, ref. 6105, circa 1952]
* [https://www.monacolegendauctions.com/auction/exclusive-timepieces-25/lot-272 Monaco Legend, lot 272 — ref. 6105, 1953]
* [https://monochrome-watches.com/rolex-datejust-complete-history/ Monochrome Watches — The Evergreens: Complete History of the Rolex Datejust] — Monochrome
* [https://monochrome-watches.com/rolex-datejust-complete-history/ Monochrome Watches — The Evergreens: Complete History of the Rolex Datejust] — Monochrome
* [https://le-monde-edmond.com/datejust-a-closer-look-at-a-rolex-icon-2/ Le Monde Edmond — Datejust: A Closer Look at a Rolex Icon] — Le Monde Edmond
* [https://le-monde-edmond.com/datejust-a-closer-look-at-a-rolex-icon-2/ Le Monde Edmond — Datejust: A Closer Look at a Rolex Icon] — Le Monde Edmond
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[[Category:Datejust]]
[[Category:Datejust]]
[[Category:Working Draft]]

Latest revision as of 08:15, 29 September 2026


Datejust → 6105

Rolex Datejust 6105 with Datejust text on the dial
Rolex Datejust 6105 with Datejust text on the dial

The 6105 is an early Datejust reference with the name printed on the dial. Auction catalogues place examples in the early 1950s and identify A.296 and 745-family movements. Antiquorum’s photograph of ref. 6075 case 685082 shows the same word, but the catalogue grades that dial restored. That image does not establish factory fitment. Collectors often credit the 6105 as the first dial-signed Datejust, but the earliest factory use of the name remains unresolved.

Core facts

detail value
reference 6105
family Datejust / Big Bubbleback / Ovettone
production about 1950–1953 (sources vary; 1953–1955 also documented)
case diameter 36mm (tonneau Oyster, Ovettone profile)
case construction three-piece, screw-down caseback and crown
case materials 18K yellow gold (most common); 18K pink/rose gold (rare); documented two-tone yellow gold and steel
bezel fine reeded/milled coin-edge gold (Datejust fluted precursor)
crystal acrylic, domed
crown screw-down brevet, "Rolex + Oyster" cross-center
movement Cal. A.296 (listed as Cal. 745 in parts catalogs)
date complication yes — date at 3 o'clock, gradual change around midnight
Cyclops no (introduced on ref 6305 in 1954)
instantaneous date change no (introduced with Cal. 1065 in refs 6604/6605, 1956–57)
"Datejust" text on dial yes — present on documented 6105 examples; often credited as first, but an earlier 6075 dial photograph is catalogued as restored
notable configurations left-handed "destro" crown-at-9 variant; Serpico y Laino co-signed; black gilt dial

What the 6105 is

The 6105 continues the 6074 and 6075 in the early Datejust line. It keeps the 36mm Ovettone case, the reeded coin-edge bezel, the domed screw-down back, the Jubilee option and the date window at 3 o'clock without a magnifier. Auction catalogues identify A.296 and 745-family movements in 6105 examples. Its documented dials carry Datejust text; the restored 6075 dial discussed below does not establish that the same wording was factory-fitted to that earlier case.

Collectors often credit the 6105 as the first reference with the model name printed on its dial. The auction examples cited here do not establish the earliest factory use.

Placing the 6105 in the Ovettone sequence

The 6105 sits among the Big Bubbleback references that preceded the later Datejust cases. The working sequence runs from the 1945 4467 through the 5028, 5030 and 5031, then the 6030/6031 pair and 6074/6075, with the 6105 in the early 1950s. Auction dates overlap and do not establish a precise factory changeover from one dial inscription to another. Later 6305 examples add the Cyclops; the 6604/6605 generation uses Cal. 1065 for instantaneous date change.

The 6105 sits on the edge of the Ovettone family. Some writers fold it in without hesitation, others treat it as a late continuation rather than a core member. Either way, it is clearly part of the same 36mm Big Bubbleback Datejust story.

The 36mm Big Bubbleback case

Case architecture on the 6105 is the Ovettone profile the 4467 established in 1945. Three-piece Oyster construction (bezel, mid-case, screw-down caseback) with a 36mm diameter tonneau form and the characteristic domed caseback that houses the rotor. The bezel is a thin reeded or milled coin-edge in matching gold, functionally identical to the 4467's and visually a direct precursor to the Datejust fluted bezel that crystallizes by the 1960s. The crystal is acrylic and domed, the crown a screw-down brevet marked "Rolex + Oyster" with cross-center. The 6105 keeps the 36mm Ovettone case used by the 4467, rather than the smaller 32mm Bubbleback case. The 6305 (1954) inherits this case profile almost unchanged, and the 1601 family of the 1960s refines it further. The 6105 is documented with Datejust text. Its position alongside the 6075 is less tidy than a simple unmarked-to-marked sequence suggests: a published 6075 dial photograph shows the word, but the auction house calls that dial restored.

One variant sits on top of this otherwise conventional architecture: the left-handed destro case. It is rare enough to matter, and it puts the 6105 into the short list of early left-crown Rolex references.

Precious metal and the configuration space

The 6105 is gold-dominant. 18K yellow gold is the most common configuration by a wide margin, and 18K pink or rose gold follows, with a smaller surviving population. Two-tone 18K yellow gold and steel examples are documented on 6105 cases and represent an early precursor to what becomes the Rolesor format on later Datejusts. A pure steel 6105 is less clearly documented than the yellow or pink gold variants; the Ovettone production bias toward precious metal is consistent with the 4467 era and only begins to loosen in the 6305 era.

The 6105 dial range is wider than the 4467's. Cream and silvered dials are the standard look, black gilt is the glamour variant, and honeycomb dials are rarer still. Hands across the range are gold, alpha or dauphine on most examples, with luminous inserts on the sportier configurations and plain polished hands on dress variants. Date wheels are typically black-on-white; roulette wheels (red/black alternating) still appear on some earlier 6105 examples, carried over from the late-4467 era before settling into standard black numerals as the 1950s progressed.

A Serpico y Laino signature is an individual retailer attribution. Its originality and fitment need image-backed provenance.

Movement: Cal. A.296

The cited 6105 catalogues identify Cal. A.296, an early Aegler automatic movement used in this period. "A.296" denotes the movement's 29.6mm diameter. Rolex's parts-catalog nomenclature lists the same movement within the 740/745 family, consistent with how the 4467's A.295 appears as Cal. 740/745 in the same catalogs. The parts-catalogue names refer to the same movement family; the cited lots identify the movement as A.296.

The cited examples list 18 jewels. The available lot descriptions do not establish a universal winding direction, shock-protection specification or date-change behaviour for every 6105. The 6105 remains mechanically part of the Bubbleback generation while the Datejust name appears on its documented dials.

One detail matters for authentication on 6105 and 4467 examples alike: the dial feet differ between A.295 and A.296, so the two references do not share period-correct dials.

The dial text: what "Datejust" looks like on the 6105

Datejust is printed on the documented 6105 dials. It identifies the model on the face of the watch, but the available 6075 auction record prevents an unqualified claim that 6105 is the first reference ever to show the word. Antiquorum's photographed 6075 case 685082 carries the text; the catalogue grades that dial restored, so it remains unclear whether this was factory fitment or later work.

Collecting and auction context

Auction prices vary with case metal, dial and condition. The cited sales cover different metals, dials and dates, so they document individual results rather than a stable market range or ranking. Case condition, dial originality, metal and accessories affect each result.

Authentication priorities

Check a 6105 through its movement, dial, case, metal and bracelet, with special attention to the dial-foot position.

The cited 6105 lots identify A.296 (Cal. 745, or the 740/745 family in parts-catalog form). A catalogued A.295 or later caliber needs an explanation as a replacement, a misidentification, or a case mismatch. Movement architecture should match the period documentation.

Dial feet position is the defining 6105-versus-4467 authentication check. A.295 and A.296 dial feet sit in different positions, and a 6105 dial on a 4467 movement (or vice versa) is not period-correct. Dial text: "Datejust" above six is the reference-defining feature. A 6105 listing without that text needs an explanation, such as a replacement dial, a case mismatch or a catalogue error.

Case material is 18K yellow, 18K pink, or documented two-tone. A steel-only 6105 needs scrutiny against period documentation; the Ovettone bias toward gold is consistent with the 4467 era and only genuinely breaks with the 6305 that follows.

Bracelet is Jubilee or Oyster in matching gold. Period-correct original-delivery bracelets are uncommon survivors; clasp-date verification against case serial is the standard check. Service-replacement Jubilees are common and are not disqualifying but do affect pricing.

Left-handed variants, the crown-at-nine destro configuration, are documented but rare. Provenance and photographic history matter more than usual given the reference's unusual layout.

What the 6105 established

The 6105 is an early Datejust reference with the model name printed on documented dials. It is often cited as the first such reference. A photographed 6075 carries the same wording, but its dial was graded restored and cannot establish original fitment. The earliest factory use of the text remains unresolved.


Auction record

source example result or estimate
Antiquorum, lot 281 circa 1950, pink gold, case 791548, black dial, A296, 36 mm CHF 16,250
Monaco Legend, lot 125 1951, pink gold, case 837513, A.296, 36 mm CHF 12,500 incl. premium
Christie’s circa 1952, 18K gold, case 820172, black dial, A.296, 35 mm estimate US$6,500–9,000
Monaco Legend, lot 272 1953, yellow gold, case 971852, A.296, 36 mm, box and tag €268,750 incl. premium

Related references

See also the movement reference, bracelet & clasp guide, and serial numbers by year.

Sources

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