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The Encyclopedia of Horology

Pocket watch · Military pocket watch

Omega GSTP Military Pocket Watch

Partially verified

This military pocket watch, attributed to the World War II era, was produced by Omega for the British Army under the GSTP (General Service Timepiece) standard. The watch features a 52 mm brass case with a nickel-plated finish and a snap-back cover. The exterior of the case back displays the British military broad arrow mark, the designation "G.S.T.P.", and the serial number "Y03709". The dial is white enamel with black Arabic numerals and a subsidiary seconds dial located at the 6 o'clock position. The movement is an Omega manual-wind calibre 38.5L.T1, finished with gilt plating and containing 15 jewels. The watch is accompanied by a vintage, unused (NOS) leather strap. According to the source description, the movement is in functional condition following a recent service, and the case exhibits minor signs of wear consistent with military usage.

Front view of the Omega GSTP military pocket watch with its dial, hands, and subsidiary seconds visible.
Front view of the Omega GSTP military pocket watch with its dial, hands, and subsidiary seconds visible. — Ashton-Blakey Antiques via Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Pocket watch · Military pocket watch
Maker / attribution
Omega
Reference
1140
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
circa 1940s
Source-reported place
Switzerland
Source-reported serial
Y03709

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 52 mm diameter brass case treated with a nickel-plated finish. It utilizes a snap-back construction. The outer case back is engraved with military identifiers, specifically the British Army's broad arrow, the "G.S.T.P." designation, and the serial number "Y03709". The seller indicates that the base brass metal is not visible through the nickel plating.

The dial is rendered in white enamel and features black Arabic numerals. It includes a subsidiary seconds register positioned at the 6 o'clock mark. The watch is provided with an accompanying vintage, unused leather strap.

Evidence for this section
  • “قاب ساعت از جنس برنج با آبکاری نیکل ساخته شده”
  • “در نمای بیرونی قاب پشتی، علامت پیکان عریض ارتش بریتانیا (Broad Arrow) به همراه نوشته «G.S.T.P.» و شماره سریال نظامی «Y03709» حکاکی شده است.”
  • “ساعت دارای صفحه مینای سفید با ارقام و عقربه‌های مشکی و زیرثانیه بزرگ فرو رفته در موقعیت ساعت ۶ است.”

Movement and Function

The timepiece is powered by an Omega calibre 38.5L.T1 movement, which operates on a manual-winding system via the crown. The movement is finished with gilt plating and contains 15 jewels.

According to the source, the mechanism has been recently serviced and is reported to be in functional and clean condition.

Evidence for this section
  • “مکانیزم درون ساعت کالیبر دستی 38.5L.T1 ساخت امگا با روکش طلایی (Gilt) و دارای ۱۵ سنگ قیمتی است”
  • “ساعت به تازگی سرویس شده و مکانیزم آن در شرایط کارکرد بسیار مطلوب و تمیز قرار دارد.”

Historical Context and Markings

The GSTP (General Service Timepiece) watches were produced in the mid-20th century to meet specifications required by the British Army for field operations and logistics. Various Swiss makers produced these timepieces during this period, which coincides with World War II.

The internal side of the case back is marked with the Omega brand name, the inscription "Fab. Suisse," and the number 1140.

Evidence for this section
  • “ساعت‌های نظامی سری GSTP (مخفف General Service Timepiece) در سال‌های میانی قرن بیستم ابزاری کاربردی و اساسی برای نیروهای تدارکات و عملیات میدانی بودند”
  • “داخل درب پشتی نیز نام OMEGA و علامت Fab. Suisse به همراه شماره ۱۱۴۰ به چشم می‌خورد.”

Open research questions

  • Can the serial number Y03709 be used to confirm a specific year of production within the 1940s?
  • Is the number 1140 found inside the case back an internal reference number or a specific production code for this batch?

Source evidence

Recorded claims and source quotations for Omega GSTP Military Pocket Watch
FieldSource-reported valueSource quotation
MakerOmega“ساعت جیبی نظامی متعلق به برند OMEGA”
Calibre38.5L.T1“کالیبر 38.5L.T1”
Case MaterialBrass with nickel plating“قاب ساعت از جنس برنج با آبکاری نیکل ساخته شده”
Military MarkingsBroad arrow, GSTP, Y03709“علامت پیکان عریض ارتش بریتانیا (Broad Arrow) به همراه نوشته «G.S.T.P.» و شماره سریال نظامی «Y03709» حکاکی شده است.”
Movement FinishGilt“کالیبر دستی 38.5L.T1 ساخت امگا با روکش طلایی (Gilt)”
Case Diameter52 mm“قطر بدنه ۵۲ میلی‌متر گزارش شده”
Jewel Count15“دارای ۱۵ سنگ قیمتی”
DialWhite enamel“صفحه مینای سفید”

Visible details

  • Case back features engraved broad arrow and military serial number
  • Subsidiary seconds dial positioned at 6 o'clock
  • Movement plates feature Omega signature and 15 jewels marking
  • White enamel dial with black numerals

Research qualifications

  • The exact production date within the 1940s is not verified
  • The extent of internal case markings is based solely on the seller's description

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

Consulted source

ساعت جیبی نظامی OMEGA کالیبر 38.5L.T1 ارتش بریتانیا GSTP

Reviewed 2026-11-02 · Record 6f987f5c36

Terms in this record

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

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