Antique c. 1900 OMEGA Grand-Prix World Time / GMT Silver Wristwatch – 51mm –

Up for consideration is a highly unusual and museum-quality antique Omega wristwatch dating back to the early 1900s. Originally crafted during an era of great horological innovation, this substantial 51mm timepiece features a remarkable rotating inner World Time/GMT dial complication. It is in perfect working order and comes fitted with a brand-new genuine leather strap, ready for wear or prominent display in a serious collection.

At the turn of the 20th century, Omega was cementing its reputation as a powerhouse of precision timekeeping, famously taking home prestigious Grand Prix medals at international exhibitions (as proudly displayed on this watch’s inner dust cover). During this era, international travel and global communication were rapidly expanding, creating a niche demand for timepieces that could track multiple time zones.

This specific piece features a fascinating rotating central disc calibrated with major global cities (from London and Paris to New York and Rio de Janeiro) and their corresponding time offsets. Encased in a massive 51mm frame, this watch bridges the gap between the traditional pocket watch era and the dawn of the purpose-built wrist instrument, showcasing an exceptional level of technical sophistication for the early 1900s.

Detailed Specifications

The Dial

• Design: Pristine white enamel dial featuring a dual-track time display.

• Numerals: The primary hours are marked by bold, clearly visible black Arabic numerals (1-12), complemented by a secondary 24-hour track with red Arabic numerals (13-24) along the outer perimeter.

• Complication: The center features a highly collectible rotating GMT/World Time disc, detailed with prominent global cities and their time deviations (e.g., London, Paris & Berli +1, Moscow +4, New York -5).

• Hands: Exquisite, ornate gold-tone Louis XV-style hands.

The Case

• Dimensions: A substantial 51mm in diameter, offering immense wrist presence.

• Material & Hallmarks: The inner caseback  is stamped with the Swiss “0.800” silver purity mark alongside the traditional grouse hallmark and the Omega manufacturer stamp. The exterior presents a beautiful rose-gold tone (vermeil/gold-washed over silver).

• Caseback: The exterior caseback  features an intricate engine-turned (guilloché) pattern, centered by an elegant, engraved cartouche.

• Dust Cover: The inner cuvette  is stunningly decorated with Omega’s exhibition medals and engraved “OMEGA – BIENNE – GENÈVE”.

• Crown: Large, easy-to-grip fluted onion crown positioned at 3 o’clock 

The Movement

• Caliber: Original antique Omega mechanical manual-wind movement .

• Condition: The gilt movement is remarkably clean, fully signed by Omega, and currently functioning in perfect working order.

The Strap

• Fitted with a brand-new, high-quality genuine black leather strap with contrasting white stitching, complementing the vintage aesthetic perfectly.

Condition Report

This antique timepiece has been meticulously preserved. The enamel dial is remarkably clean given its age, with crisp typography and vibrant colors. The heavy 51mm case shows age-appropriate wear that adds to its authentic historic character, with the engine-turned details remaining sharp. The movement winds smoothly and keeps excellent time. Please review all high-resolution macro photographs closely, as they accurately represent the watch’s cosmetic condition.

The watch comes with an APPRAISAL CERTIFICATE FOR $3000