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The Encyclopedia of Horology

Wristwatch · Datejust wristwatch

Rolex Datejust 1603

Partially verified

This Rolex Datejust wristwatch, reference 1603, is dated by the source to circa 1974. The timepiece features a 36 mm stainless steel case equipped with an acrylic crystal (plexiglass) and a date magnifier. The bezel is constructed from stainless steel and features a reeded, fluted pattern. It houses a matte black "pie-pan" dial with applied hour markers exhibiting cream-colored patina. The movement incorporates a slow-set date change mechanism. The watch is presented on a stainless steel Jubilee bracelet, reference 62510H, with 555 end links and a clasp marked with "H 10". The auction description reports that the watch has been serviced and timed by a watchmaker and includes a handmade leather case. This specific reference is characterized by the use of an all-steel engine-turned bezel rather than white gold, paired with the pie-pan dial configuration consistent with 1960s and 1970s production.

Rolex Datejust 1603 on a stainless steel Jubilee bracelet.
Rolex Datejust 1603 on a stainless steel Jubilee bracelet. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Datejust wristwatch
Maker / attribution
Rolex
Reference
1603
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
circa 1974
Source-reported place
Switzerland
Source-reported serial
394xxxx

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial

The watch is housed in a 36 mm stainless steel case, paired with a distinct reeded steel bezel. This bezel design distinguishes the 1603 reference from Datejust models fitted with white gold fluted bezels.

The dial is finished in a matte black color and follows the pie-pan construction. Applied hour indices are present, and the source indicates these have developed a uniform, cream-colored patina. The overall appearance is consistent with late-era 1603 production during the 1970s.

Evidence for this section
  • “قاب فولادی با قطر ۳۶ میلی‌متر”
  • “زه (بزل) این مدل از جنس استیل و با الگوی شیاردار ویژه مابین بخش‌های برجسته (Reeded) طراحی شده است.”
  • “صفحه ساعت از نوع موسوم به پای‌پن (pie-pan) با زمینه مشکی بوده و شاخص‌های برجسته ساعت همراه با پتینای یکنواخت به رنگ کرم بر روی آن به چشم می‌خورند.”

Movement and Bracelet

The mechanical movement is stated to feature a slow-set date change function. The watch is mounted on a steel Jubilee bracelet, identified as reference 62510H. This bracelet includes 555 end links and features a clasp engraved with "H 10".

The seller reports that the movement has undergone a full inspection and precise timing by a watchmaker. The bracelet is reported to be in good and functional condition.

Evidence for this section
  • “موتور دستگاه دارای قابلیت تغییر تاریخ با تنظیم آرام (slow-set) است”
  • “بند متصل به ساعت نیز از نوع جوبیلی (Jubilee) رفرنس 62510H با لینک‌های انتهایی ۵۵۵ و قفل نشانه‌گذاری‌شده با عبارت H 10 می‌باشد.”
  • “ساعت توسط ساعت‌ساز بازبینی کامل و تنظیم دقیق شده”

Provenance and Condition

According to the source, the watch dates to approximately 1974 based on the serial number. The general state of the case is described as excellent, with the bezel retaining its sharp geometric definition. The dial is reported by the seller to be in a rare, high-quality condition.

The item is accompanied by a handmade leather case, provided as part of the package by the source. All information regarding the condition and authenticity of the components remains attributed to the vendor's catalog.

Evidence for this section
  • “طبق اطلاعات ارائه‌شده توسط فروشنده به حدود سال ۱۹۷۴ میلادی تعلق دارد.”
  • “وضعیت کلی قاب در وضعیت بسیار عالی توصیف شده و بزل دستگاه نیز تیزی و ساختار هندسی خود را حفظ کرده است.”
  • “به همراه یک کیف چرمی دست‌ساز ارائه می‌شود.”

Open research questions

  • Does the 'H 10' clasp code correlate with the 1974 production year of the watch head?
  • Was the movement caliber professionally identified during the reported servicing process?

Source evidence

Recorded claims and source quotations for Rolex Datejust 1603
FieldSource-reported valueSource quotation
Reference1603“شماره رفرنس: 1603”
Serial394xxxx“شماره سریال: 394xxxx (مربوط به سال ۱۹۷۴)”
Case materialStainless steel“جنس قاب: فولاد ضد زنگ (استیل)”
Bezel typeReeded steel“نوع زه (بزل): استیل شیاردار (Reeded Bezel)”
CrystalPlexiglass“شیشه: پلکسی گلس (طلق)”
Bracelet reference62510H“بند متصل به ساعت نیز از نوع جوبیلی (Jubilee) رفرنس 62510H”
Date mechanismSlow-set“موتور دستگاه دارای قابلیت تغییر تاریخ با تنظیم آرام (slow-set) است”

Visible details

  • Reeded stainless steel bezel
  • Black pie-pan dial with cream patina
  • Jubilee bracelet with H 10 clasp
  • Magnifying lens over date aperture

Research qualifications

  • The serial number provided is a partial reference string
  • Authenticity and condition claims are based on seller information and not independent verification

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

ساعت مچی Rolex Datejust 1603 با صفحه مشکی

Reviewed 2026-11-02 · Record 0731b309c5

Terms in this record

Glossary explanations for terms named in this object’s record.

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