Admin: Create researched Datejust ref. 1603 reference guide

2026-10-25T02:01:43Z

Create researched Datejust ref. 1603 reference guide

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{{DISPLAYTITLE:Rolex Datejust 1603}}
{{#seo:
|title=Rolex Datejust 1603 — Engine-turned bezel and documented examples | Rolexopedia
|description=Reference guide to the four-digit Rolex Datejust 1603: its steel engine-turned bezel, movement labels, documented dial examples, case details and dated auction records.
|keywords=Rolex Datejust 1603, engine-turned bezel, calibre 1560, calibre 1570, vintage Rolex, Datejust
|image=Ref 1603 hero.webp
|image_alt=Rolex Datejust ref. 1603, case 701448, identified by Christie's as made in 1961; photographed with its box and guarantee
|type=Article
|og_type=article
|robots=index,follow,max-image-preview:large
}}

<small>Datejust → '''1603'''</small>

<div class="rp-lead">
[[File:Ref 1603 hero.webp|thumb|center|640px|alt=Rolex Datejust ref. 1603, case 701448, identified by Christie's as made in 1961; photographed with its box and guarantee|Christie's 2016 photograph of ref. 1603, case 701448, made in 1961. The catalogue identifies an engine-turned ribbed bezel and caseback stamp III.61.]]
</div>

Rolex ref. 1603 is a stainless-steel Datejust in the four-digit 1600/1601/1603 series.

==Core facts==

{| class="wikitable"
! Detail !! Evidence
|-
| Reference || 1603
|-
| Family || Datejust. Most exact-reference records use this name; one ''Vintage Rolex Field Manual'' table also places 1603 under Oysterdate.
|-
| Production || Factory endpoints remain unsettled; dated examples are summarized below.
|-
| Case || Stainless steel in the exact-reference examples reviewed. Most catalogues give 36 mm; Christie’s measures case 701448 at 35.5 mm diameter. One Antiquorum entry reports 34.4 mm diameter, 35.5 mm width and 42.6 mm length for a different watch.
|-
| Bezel || Steel, engine-turned.
|-
| Crystal || Acrylic, with a Cyclops magnifier over the date on the examples described.
|-
| Movement || Catalogues identify examples as Cal. 1560, 1560/65 or 1570.
|-
| Date setting || Slow-set date. Advance it by moving the hands through midnight.
|-
| Bracelet || Jubilee examples are documented, including ref. 6251H with end links 55 on one 1970 Antiquorum lot. Original bracelet fitment remains a watch-specific question.
|}

==Where it sits in the line==

The 1600, 1601 and 1603 are four-digit Datejust references, commonly distinguished by smooth, fluted and engine-turned bezels. The ''Vintage Rolex Field Manual'' gives this sequence in its Datejust table.

The five-digit 16030 followed in 1977 with Cal. 3035 and a quickset date. The 1603 keeps the earlier slow-set date and acrylic crystal. Monochrome describes the 160xx generation as preceding the sapphire-crystal 162xx generation.

==Production outline==

Antiquorum's 2006 catalogue gives a 1960–1976 production span. Dated examples in the records run from 1960 through 1974; Christie's also catalogued a Saudi Armed Forces dial around 1978, with a partially masked case number. The circa-1978 attribution extends beyond Antiquorum's stated endpoint; the catalogues do not establish the factory run.

An inside-caseback year dates that case; a clasp code dates the bracelet. Catalogue estimates and guarantee dates apply to the individual examples.

==Movement notes==

The dated catalogues label examples Cal. 1560, 1560/65 or 1570. Christie's circa-1978 Saudi Armed Forces listing is the outlier: it gives Cal. 1560 with 26 jewels. The auction photos do not show movement engravings.

Cal. 1575 is the date-equipped member of the 1570 family; a 1575 bridge can carry a 1570 stamp. The [[Reference:Movements|Movements]] guide explains why a bridge marking does not identify the complete calibre. The sampled 1603 records do not establish when the calibre changed.

==Dial map==

Recorded dials include silvered, light-gray, textured and underline examples.

* Antiquorum's 1960 and Christie's 1961 examples have silvered dials with applied markers. Christie’s circa-1963 listing describes dagger-form numerals.
* A collector-owned 1603 dated to caseback code II 65 is shown with a sloping-edge “pie-pan” dial, alpha hands and applied markers. The source presents these as details of one watch.
* Phillips' circa-1973 example has a textured dial. Antiquorum described a light-gray dial with white lettering on its circa-1964 example.
* Antiquorum's 1974 case 3830515 has a reprinted dial; it records the present finish of that watch.

Christie's assigned a circa-1964 underline dial to ref. 1603. The catalogue calls the bezel fluted and gives no case number to check the attribution against.

==Case, bezel, crystal, and crown notes==

Antiquorum's 2010 catalogue and Christie's 1961 case 701448 describe engine-turned or engine-turned ribbed bezels. Christie's 2011 and 2016 listings use “fluted.” The ''Vintage Rolex Field Manual'' assigns engine-turned to the Datejust and fluted to the Oysterdate, though its tables conflict over the family assignment. The 1974 Antiquorum photo shows deep grooves on case 3830515; the catalogue does not name that bezel.

Most exact-reference catalogues report a 36 mm case. Christie’s gives case 701448 a 35.5 mm diameter; Antiquorum’s circa-1970 lot reports 34.4 mm diameter, 35.5 mm width and 42.6 mm length. Antiquorum does not state its measurement convention.

Antiquorum's 2010 catalogue describes an acrylic crystal with Cyclops, screw-down crown and screw-back Oyster case. The 1974 Antiquorum images show the smooth exterior caseback of case 3830515.

<gallery mode="packed" heights="180">
File:Ref 1603 bezel-disputed.webp|Antiquorum lot 188, case 3830515, dated 1974.
File:Ref 1603 crown-side.webp|The same 1974 lot, oblique case and Jubilee bracelet
File:Ref 1603 caseback.webp|The same lot's exterior caseback and bracelet
</gallery>

==Bracelet, clasp, and packaging notes==

Auction catalogues show the 1603 on Jubilee bracelets. Antiquorum's circa-1970 case 2 460 286 is listed with bracelet 6251H and end links 55. The 1974 case 3830515 also appears with a Jubilee bracelet. Phillips records a Jubilee on its circa-1973 watch.

The auction listings document sale configurations for those watches. A Rolex Forums discussion says buyers could choose bracelets separately, but cites no period catalogue. Date boxes and papers to the individual watch rather than the reference.

==Special branches==

Christie's catalogued one ref. 1603 with a Royal Saudi Arabian Armed Forces emblem dial and described it as made for the force. The catalogue gives no delivery record or issue quantity.

==Historical market and auction record==

{| class="wikitable"
! Sale record !! What the catalogue records
|-
| Antiquorum, New York, lot 172 (2010) || Case 1106767; made in 1964; Cal. 1560, 26 jewels; 36 mm; silvered dial; engine-turned bezel; acrylic crystal and Cyclops.
|-
| Christie's, Geneva, lot 241 (2016) || Case 701448; made in 1961; 35.5 mm diameter; Cal. 1560, 25 jewels; silvered dial; engine-turned ribbed bezel; inside caseback stamped III.61; Jubilee bracelet stamped 2/70.
|-
| Antiquorum, The Mondani Collection, Geneva, lot 204 (2006) || Case 583923; made in 1960; steel; Cal. 1560/65, 25 jewels; silvered dial. Antiquorum gives a 1960–1976 production span in its note.
|-
| Christie's New York, lot 107 (2011) || Case 1700193; circa 1963; steel; Cal. 1560, 25 jewels; silvered matte dial; Jubilee bracelet. Christie's calls the pictured bezel fluted.
|-
| Antiquorum Monaco, lot 62 (2026) || Case 1110233; circa 1964; Cal. 1560; light-gray dial; bracelet clasp stamped I-64. The bracelet stamp dates that bracelet, not the case.
|-
| Antiquorum Hong Kong, lot 135 (2022) || Case 2 460 286; circa 1970; Cal. 1570, 26 jewels; Jubilee 6251H with end links 55; dimensions reported as 34.4 mm diameter, 35.5 mm width and 42.6 mm length.
|-
| Phillips Hong Kong Watch Auction: SIX, lot 950 || Case 3'392'526; circa 1973; Cal. 1570, 26 jewels; textured dial; steel Jubilee; guarantee dated 23 March 1974.
|-
| Christie's, Saudi Armed Forces Datejust, ref. 1603 (2016) || Partially masked case number 5'253'49; circa 1978; Cal. 1560, 26 jewels; emblem dial. Christie's describes an engine-turned ribbed bezel.
|-
| Antiquorum Geneva, lot 188 (2024) || Case 3830515; dated 1974; Cal. 1570, 26 jewels; reprinted dial; Jubilee bracelet, ref. 6251H, end links 55.
|-
| Christie's Watches Online, “Underline” dial, lot 33 (2016) || Circa 1964; Cal. 1560; silvered underline dial; Christie's describes a fluted bezel. No case number is given.
|}

<gallery mode="packed" heights="180">
File:Ref 1603 hero.webp|Christie's Geneva lot 241, case 701448, made in 1961; engine-turned ribbed bezel
File:Ref 1603 bezel-disputed.webp|Antiquorum Geneva lot 188, case 3830515, dated 1974; reprinted dial and grooved bezel
File:Ref 1603 crown-side.webp|The same 1974 Antiquorum watch, oblique case and bracelet view
File:Ref 1603 caseback.webp|The same watch, exterior caseback
</gallery>

==Related references==

* [[Reference:1601|Datejust 1601]], the fluted-bezel sibling.
* [[Reference:Movements|Movements]], for the 1565/1575 movement family and bridge markings.
* [[Reference:Serial-numbers|Serial numbers by year]], for the limits of serial dating.
* [[Reference:Bracelets|Bracelets]], for bracelet, end-link and clasp references.

== Sources ==

* [https://catalog.antiquorum.swiss/en/lots/rolex-lot-108-204 "Antiquorum Geneva, The Mondani Collection, lot 204 — Datejust ref. 1603, case 583923", Antiquorum Genève SA, 2006-05-14]
* [https://www.christies.com/en/lot/lot-5454560 "Christie's New York, lot 107 — Datejust ref. 1603, case 1700193", Christie's, 2011-12-15]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-1603-datejust-lot-388-62 "Antiquorum Monaco, lot 62 — Datejust ref. 1603, case 1110233", Antiquorum Genève SA, 2026-06-28]
* [https://www.phillips.com/detail/rolex/116818 "Phillips Hong Kong Watch Auction: SIX, lot 950 — Datejust ref. 1603, case 3'392'526", Phillips]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-1603-datejust-lot-368-188 "Antiquorum Geneva, lot 188 — Datejust ref. 1603, case 3830515", Antiquorum Genève SA]
* [https://catalog.antiquorum.swiss/en/lots/rolex-ref-1603-oyster-perpetual-datejust-superlative-chronometer-officially-certified-lot-351-135 "Antiquorum Hong Kong, lot 135 — Datejust ref. 1603, case 2 460 286", Antiquorum Genève SA, 2022-05-28]
* [https://onlineonly.christies.com/s/christies-watches-online-time-autumn/rolex-datejust-underline-dial-ref-1603-33/33932 "Christie's Watches Online, “Datejust, ‘Underline’ dial, ref. 1603”", Christie's, 2016-10-26]
* [https://www.beyondthedial.com/post/collector-guide-rolex-datejust-36mm-steel-1972-1987/ "“Collector Guide: Rolex Datejust 36mm Steel 1972–1987”", Beyond the Dial]
* [https://www.vintagewatchadvisors.com/blog/2023/07/28/rolex-datejust-1603/ ewand, "“Rolex DateJust 1603”", Vintage Watch Advisors, 2023-07-28]
* [https://irp-cdn.multiscreensite.com/0b5fdf83/files/uploaded/1.0%20RolexBook-23Mar.pdf Colin A. White, "Colin A. White, The Vintage Rolex Field Manual — refs. 1603, pp. 95 and 99", Morning Tundra, 2020]
* [https://www.rolexforums.com/showthread.php?t=278508 "Rolex Forums, “Datejust references,” started 3 February 2013", Rolex Forums participants, 2013-02-03]
* [https://monochrome-watches.com/rolex-datejust-complete-history/ Monochrome, "Monochrome Watches — The Evergreens: Complete History of the Rolex Datejust", Monochrome, current]
* [https://catalog.antiquorum.swiss/en/lots/rolex-lot-240-172 "Antiquorum New York, lot 172 — Datejust ref. 1603, case 1106767", Antiquorum Genève SA, 2010-09-15]
* [https://www.christies.com/lot/rolex-a-rare-stainless-steel-automatic-wristwatch-6028556/?intObjectID=6028556&lid=3 "Christie’s Geneva, lot 241 — Datejust ref. 1603, case 701448, made in 1961", Christie’s]
* [https://www.christies.com/en/lot/lot-5892966 "Christie’s, Saudi Armed Forces Datejust ref. 1603 — circa 1978", Christie’s]

[[Category:Datejust]]

Reference:1603 - Revision history

Admin: Create researched Datejust ref. 1603 reference guide