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Rewrite ref. 3725 from auction and dealer records; remove unsupported variant and movement claims
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{{DISPLAYTITLE:Rolex 3725 Oyster Perpetual Bubbleback}}
{{DISPLAYTITLE:Rolex Oyster Perpetual 3725}}
{{#seo:
{{#seo:
|title=Rolex 3725 Bubbleback — Rose Gold, Bi-Metal and Full-Set Examples | Rolexopedia
|title=Rolex 3725 Bubbleback — Documented Examples | Rolexopedia
|description=The Rolex 3725 is a 32mm Oyster Perpetual Bubbleback documented in three distinct constructions: solid rose gold with an unusual even-number dial, pink gold and steel with an engine-turned bezel, and a gold-plated full-set example with an August 1947 invoice, COSC certificate and Bucherer warranty.
|description=Auction and dealer records for Rolex reference 3725, including two-tone steel-back, solid rose-gold, and gold-plated examples from the 1940s.
|keywords=Rolex, 3725, Bubbleback, Oyster Perpetual, vintage Rolex, chronometer
|keywords=Rolex, 3725, Bubbleback, Oyster Perpetual, N. 599
|image=Ref 3725 hero.webp
|image=Ref 3725 hero.webp
|image_alt=Rolex 3725 Bubbleback, rose gold case
|image_alt=Rolex reference 3725 Bubbleback with rose gold case
|type=Article
|type=article
|og_type=article
|robots=index,follow,max-image-preview:large
}}
}}


<small>[[Reference:oyster-perpetual|Oyster Perpetual]] -&gt; '''3725'''</small>
<small>[[Reference:oyster-perpetual|Oyster Perpetual]] → '''3725'''</small>


The 3725 is a 32mm Oyster Perpetual Bubbleback documented in three genuinely different builds. One is solid rose gold, case and bezel both, wearing a rose dial with an unusual marker layout — Arabic numerals at 2, 4, 6, 8, 10 and 12 only, skipping the odd hours entirely. A second pairs pink gold with steel and adds an engine-turned bezel over the more common domed style, on a silver dial with gold stick numerals. The third is the most thoroughly documented: pink gold plated over steel, center seconds, sold new in August 1947 with a Bucherer warranty and COSC certificate that have survived with the watch to auction seven decades later.
<div class="rp-lead">
[[File:Ref 3725 hero.webp|thumb|center|640px|alt=Rolex reference 3725 Bubbleback with rose gold case|Reference 3725, rose-gold example]]
</div>


<span id="core-facts"></span>
Reference 3725 appears on 1940s Oyster Perpetual watches with different case metals and dials. Auction catalogues document a rose-gold-and-steel watch in 1944 and a gold-plated example sold new in August 1947. Dealer listings show a rose-gold example and a pink-gold-and-steel watch with an engine-turned bezel. These records describe individual watches; they do not establish the reference’s production span or full range of variants.


[[File:Ref 3725 hero.webp|thumb|right|250px|alt=Rolex 3725 Bubbleback, rose gold case|Rolex 3725 Bubbleback, rose gold case]]
==Core facts==
 
== Core facts ==


{| class="wikitable rp-facts"
{| class="wikitable rp-facts"
|-
|-
! detail
! detail
! value
! documented examples
|-
|-
| reference
| reference
Line 30: Line 28:
|-
|-
| family
| family
| Oyster Perpetual (Bubbleback)
| Oyster Perpetual; commonly grouped with Bubblebacks
|-
|-
| common name
| dates
| "Bubbleback"
| Heritage catalogued one example circa 1944; Antiquorum records another as sold new in August 1947
|-
|-
| production
| case
| documented examples span circa 1944 to August 1947 (invoice-dated)
| 32mm in Heritage, Antiquorum and Van Rijk records
|-
|-
| case
| case metals
| 32mm; documented in solid rose gold, pink gold and steel bi-metal (plain and engine-turned bezel), and pink gold plated over steel
| Rose gold and steel; gold-plated metal and steel; one Oyster Palace listing describes a rose-gold case
|-
|-
| movement
| movement
| self-winding, caliber sized 9¾ lignes, 17 jewels (per the full-set example)
| Automatic. Heritage identifies N. 599, 18 jewels; Antiquorum lists 9¾ lignes and 17 jewels. These records differ.
|-
| dial (documented)
| rose dial with 2/4/6/8/10/12 Arabic markers only, no lume (solid gold example); silver with gold stick numerals (engine-turned-bezel example); standard signed dial, center seconds (full-set example)
|-
|-
| documented examples
| dials
| Antiquorum lot 191 (case no. 489161, full set, invoice dated August 1947); a dealer-catalogued solid rose gold example, serial 284,XXX, circa 1944; a dealer-catalogued engine-turned-bezel pink gold and steel example
| Black luminous Arabic dial; rose dial with even-number Arabic markers and no lume; silver dial with gold stick markers
|}
|}


<span id="where-it-sits-in-the-line"></span>
==Documented examples==
== Where it sits in the line ==
 
"Bubbleback" is a collector nickname, never an official Rolex designation, for the family of Oyster Perpetual references built from 1933 through the mid-1950s around the domed caseback needed to clear the early automatic winding rotor. The 3725 sits inside that range without a firmly documented introduction date, but its three known configurations already show Rolex offering the same reference number across a genuine spread of cost tiers — solid gold at the top, gold-plated-over-steel as a lower-cost alternative, and a bi-metal middle tier dressed up with an engine-turned bezel rather than the plain domed style most Bubblebacks carry.
 
<span id="production-outline"></span>
== Production outline ==
 
The earliest documented example carries serial number 284,XXX and is dated to 1944 by the dealer who catalogued it. The most precisely dated example is the Antiquorum full set: sold new in August 1947, per the surviving original invoice, with its original warranty, COSC certificate and a Bucherer warranty card. Bucherer is a major Swiss retail chain, and a Bucherer warranty on a period Rolex documents the original retail channel the watch passed through — a useful anchor distinct from the movement or case serial. Between the 1944 serial-dated example and the 1947 invoice-dated one, the documented run spans at least three years.
 
<span id="movement-notes"></span>
== Movement notes ==
 
The full-set example specifies a self-winding movement sized 9¾ lignes with 17 jewels — the same movement-size class documented on the 3130 and 3133 references from the same generation. "9¾ ligne" identifies the movement's diameter rather than a single caliber number shared identically across every Bubbleback of that size.
 
<span id="dial-map"></span>
== Dial map ==


The solid rose gold example carries the most distinctive dial documented on this reference: a rose ground with Arabic numerals at 2, 4, 6, 8, 10 and 12 only, and no luminous fill at all — an unusual half-set marker layout rather than the full 1-through-12 or 3-6-9 arrangements more common across the Bubbleback range. Its hands are rose gold "stick" style with a blued-steel seconds hand.
Heritage sold a ref. 3725 in May 2014, catalogued circa 1944. Its lot description gives case no. 284611, a rose-gold top, sides and lugs, a stainless-steel screw back, 32mm diameter, a black dial with luminous markers and Arabic numerals, and an automatic N. 599 movement with 18 jewels. Heritage recorded a result of USD 2,375.


The engine-turned-bezel example carries a silver dial with applied gold stick numerals instead, and the crown is marked "Rolex" and "Oyster" rather than carrying the Rolex coronet alone. The full-set Antiquorum example carries a standard signed dial with a center-seconds layout and no unusual markers.
Oyster Palace listed a separate 32mm rose-gold watch with serial 284,XXX and a rose dial bearing Arabic numerals at 2, 4, 6, 8, 10 and 12. The seller described the dial as having no lume. Its date of 1944 is the dealer’s attribution.


<span id="case-bezel-crystal-and-crown-notes"></span>
Van Rijk describes a 32mm pink-gold-and-steel example with an engine-turned bezel, silver dial, applied gold stick markers and a crown marked “Rolex” and “Oyster.” Its listing dates the watch broadly to the 1940s.
== Case, bezel, crystal, and crown ==


Three distinct case treatments are documented on this single reference number: solid rose gold case and bezel together; pink gold and stainless steel in bi-metal construction, with an engine-turned bezel rather than the domed style; and pink gold plating over a stainless steel base. All three are 32mm. The engine-turned bezel is the notable outlier — most documented Bubblebacks of this generation, including the 3725's own full-set example, carry a plain domed bezel rather than a decorated one.
Antiquorum’s 2026 catalogue records ref. 3725, case no. 489161, as sold new in August 1947. The watch has a pink-gold-plated and steel case, a center-seconds layout, and a 9¾-ligne, 17-jewel movement. The surviving accessories include an invoice, a Rolex warranty, a COSC certificate and a Bucherer warranty. Antiquorum recorded a sale price of CHF 6,250.


== Related references ==
These descriptions support several configurations. They do not establish which dials, bezels or metals were offered throughout the production run, or whether every listed component left the factory with its watch.


* [[Reference:3130|Bubbleback 3130]] — same movement size class, solid pink gold
==Movement notes==
* [[Reference:3133|Bubbleback 3133]] — same era, pink gold and steel construction
* [[Reference:3696|Bubbleback 3696]] — same era, mixed pink gold and steel construction


See also the [[Reference:oyster-perpetual|Oyster Perpetual family index]], [[Reference:Movements|movement reference]], [[Reference:Bracelets|bracelet & clasp guide]], and [[Reference:Serial-numbers|serial numbers by year]].
The available auction records do not agree on jewel count: Heritage lists an N. 599 with 18 jewels, while Antiquorum lists a 9¾-ligne movement with 17 jewels. The Antiquorum catalogue gives no caliber number. The lots describe their individual watches and do not establish a single movement specification for all ref. 3725 examples.


<span id="auction-record"></span>
==Auction record==
== Auction record ==


{| class="wikitable"
{| class="wikitable"
|-
|-
! Sale !! Lot !! Case no. !! Configuration !! Estimate !! Result
! auction
! lot and date
! catalogue details
! result
|-
|-
| Antiquorum, Geneva, 9–10 May 2026 || 191 || 489161 || Pink gold plated and stainless steel, center seconds, full set with original warranty, COSC certificate, Bucherer warranty and invoice dated August 1947 || CHF 2,500–4,500 || CHF 6,250 (≈ USD 7,100)
| Heritage Auctions
| lot 60117, 22 May 2014
| circa 1944; case 284611; rose gold and steel; black luminous dial; N. 599, 18 jewels
| USD 2,375
|-
| Antiquorum, Geneva
| lot 191, 9 May 2026
| sold new August 1947; case 489161; gold-plated and steel; invoice and papers; 9¾ lignes, 17 jewels
| CHF 6,250
|}
|}


Only one of the three documented 3725s has a located auction result; the rose gold and engine-turned-bezel examples are documented from dealer catalogue listings without a public hammer price.
==Related references==
 
* [[Reference:3130|Bubbleback 3130]]
* [[Reference:3133|Bubbleback 3133]]
* [[Reference:Movements|Movement reference]]
* [[Reference:Serial-numbers|Serial numbers by year]]


== Sources ==
==Sources==


* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-3725-bubbleback-lot-386-191 "Rolex, Switzerland, Ref. 3725, Bubbleback, Original Warranty, COSC, Bucherer Warranty and Original Invoice, Pink Gold Plated", lot 191, Geneva, Antiquorum, 2026]
* [https://jewelry.ha.com/itm/timepieces/wristwatch/rolex-ref-3725-rose-gold-and-steel-bubbleback-circa-1944/a/5177-60117.s?ic4=GalleryView-ShortDescription-071515 Heritage Auctions, lot 60117] — case, dial, movement and sale details for the circa-1944 watch.
* [https://oysterpalace.com/vintage-dress-rolex/1944-rg-rolex-oyster-perpetual-bubble-back-ref-3725-op-1226 "1944 RG Rolex Oyster Perpetual Bubble Back Ref: 3725", Oyster Palace]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-3725-bubbleback-lot-386-191 Antiquorum, Geneva, lot 191, 9 May 2026] — the August 1947 invoice date, case and movement description, accessories and result.
* [https://www.vanrijkestatejewellers.com/en-us/products/rolex-vintage-bubbleback-engine-turned-bezel-ref-3725 "Rolex Vintage Bubbleback Engine Turned Bezel. Ref: 3725", Van Rijk Estate Jewellers]
* [https://oysterpalace.com/vintage-dress-rolex/1944-rg-rolex-oyster-perpetual-bubble-back-ref-3725-op-1226 Oyster Palace, “1944 RG Rolex Oyster Perpetual Bubble Back Ref: 3725”] — dealer description of the rose-gold case and unusual rose dial.
* [https://www.hodinkee.com/articles/the-rolex-bubbleback-and-why-it-still-matters Anthony Traina, "The Rolex Bubbleback And Why It Still Matters", Hodinkee, 2024]
* [https://www.vanrijkestatejewellers.com/en-us/products/rolex-vintage-bubbleback-engine-turned-bezel-ref-3725 Van Rijk Estate Jewellers, “Rolex Vintage Bubbleback Engine Turned Bezel. Ref: 3725”] — dealer description of the pink-gold-and-steel watch and its dial, bezel and crown.
* [https://robbreport.com/style/watch-collector/lists/rolex-bubbleback-watches-collector-guide-1931-1950s-1235893131/ Oren Hartov, "Rolex Bubbleback Watches: A Collector's Guide, From 1931 to the 1950s", Robb Report, 2024]


[[Category:Oyster Perpetual]]
[[Category:Oyster Perpetual]]

Revision as of 07:04, 25 September 2026


Oyster Perpetual → 3725

Rolex reference 3725 Bubbleback with rose gold case
Reference 3725, rose-gold example

Reference 3725 appears on 1940s Oyster Perpetual watches with different case metals and dials. Auction catalogues document a rose-gold-and-steel watch in 1944 and a gold-plated example sold new in August 1947. Dealer listings show a rose-gold example and a pink-gold-and-steel watch with an engine-turned bezel. These records describe individual watches; they do not establish the reference’s production span or full range of variants.

Core facts

detail documented examples
reference 3725
family Oyster Perpetual; commonly grouped with Bubblebacks
dates Heritage catalogued one example circa 1944; Antiquorum records another as sold new in August 1947
case 32mm in Heritage, Antiquorum and Van Rijk records
case metals Rose gold and steel; gold-plated metal and steel; one Oyster Palace listing describes a rose-gold case
movement Automatic. Heritage identifies N. 599, 18 jewels; Antiquorum lists 9¾ lignes and 17 jewels. These records differ.
dials Black luminous Arabic dial; rose dial with even-number Arabic markers and no lume; silver dial with gold stick markers

Documented examples

Heritage sold a ref. 3725 in May 2014, catalogued circa 1944. Its lot description gives case no. 284611, a rose-gold top, sides and lugs, a stainless-steel screw back, 32mm diameter, a black dial with luminous markers and Arabic numerals, and an automatic N. 599 movement with 18 jewels. Heritage recorded a result of USD 2,375.

Oyster Palace listed a separate 32mm rose-gold watch with serial 284,XXX and a rose dial bearing Arabic numerals at 2, 4, 6, 8, 10 and 12. The seller described the dial as having no lume. Its date of 1944 is the dealer’s attribution.

Van Rijk describes a 32mm pink-gold-and-steel example with an engine-turned bezel, silver dial, applied gold stick markers and a crown marked “Rolex” and “Oyster.” Its listing dates the watch broadly to the 1940s.

Antiquorum’s 2026 catalogue records ref. 3725, case no. 489161, as sold new in August 1947. The watch has a pink-gold-plated and steel case, a center-seconds layout, and a 9¾-ligne, 17-jewel movement. The surviving accessories include an invoice, a Rolex warranty, a COSC certificate and a Bucherer warranty. Antiquorum recorded a sale price of CHF 6,250.

These descriptions support several configurations. They do not establish which dials, bezels or metals were offered throughout the production run, or whether every listed component left the factory with its watch.

Movement notes

The available auction records do not agree on jewel count: Heritage lists an N. 599 with 18 jewels, while Antiquorum lists a 9¾-ligne movement with 17 jewels. The Antiquorum catalogue gives no caliber number. The lots describe their individual watches and do not establish a single movement specification for all ref. 3725 examples.

Auction record

auction lot and date catalogue details result
Heritage Auctions lot 60117, 22 May 2014 circa 1944; case 284611; rose gold and steel; black luminous dial; N. 599, 18 jewels USD 2,375
Antiquorum, Geneva lot 191, 9 May 2026 sold new August 1947; case 489161; gold-plated and steel; invoice and papers; 9¾ lignes, 17 jewels CHF 6,250

Related references

Sources

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