Omega Seamaster 300 GMT 50th Anniversary

Overview

For sale is an Omega Seamaster 300 GMT 50th Anniversary, reference 2534.50. This watch is in good used condition, showing some marks on the bezel and case but running very strong. It comes with an aftermarket box.

Key Features

• Model: Omega Seamaster 300 GMT 50th Anniversary

• Reference Number: 2534.50

• Case Size: 41 mm

• Case Material: Stainless steel

• Bezel: Bi-directional 24-hour, black/steel tones

• Dial: Black, with bold luminous hour markers and sword hands

• Strap/Bracelet: Typically stainless steel (Bond-style) or rubber; this listing includes no original bracelet/strap stated

• Movement: Omega Caliber 1128 (automatic GMT, 44-hour power reserve, COSC chronometer-certified)

• Functions: Central time, red GMT hand for second time zone, date

• Crystal: Sapphire crystal

• Water Resistance: 300 meters (30 bar)

• Condition: Good, with visible marks on bezel and case; running strong

• Boxes/Papers: Aftermarket box included

Detailed Description

The Omega Seamaster 300 GMT 50th Anniversary (ref. 2534.50) merges classic Seamaster style with a practical GMT complication, making it ideal for travelers and enthusiasts alike. This model celebrates half a century of the Seamaster line, and features Omega’s Caliber 1128 automatic movement, renowned for its reliability, accuracy, and robust construction. The movement allows for independent quick-setting of the hour hand, plus a prominent red GMT hand for tracking a second time zone.

The 41mm stainless steel case offers a sporty presence on the wrist and the dial boasts excellent legibility with large sword hands and the iconic “big triangle” 12 marker. This reference is known for its spectacular lume, which provides outstanding legibility day or night. A bi-directional rotating bezel with a 24-hour scale further assists in tracking another timezone, appealing directly to the frequent traveler.

The 2534.50 stands out for not having the helium escape valve found on many other Seamaster 300M models from its era, resulting in a cleaner look and a slightly slimmer profile. The caseback features a special 50th Anniversary Hippocampus engraving.

Historical Significance

Introduced in 1998, this Seamaster GMT was one of Omega’s first jet-setter focused divers—directly competing with the Rolex GMT-Master while retaining classic Seamaster attributes. It is often admired for being one of the most practical and collectible variations in Omega’s GMT catalogue, with early examples now increasingly sought after by collectors. The 2534.50 pre-dates Omega’s co-axial era and is considered a tool watch classic, celebrated for its balanced proportions, high-visibility dial, and pure functionality.​

Condition and Extras

This particular watch is in good, used condition, with visible marks on the bezel and case but is running very strong. It comes with an aftermarket box only—no original Omega papers or boxes are included. Additional photos of the case and bezel can be provided on request.

Price & Shipping

This collectible Omega Seamaster 300 GMT 50th Anniversary can be shipped fully insured, overnight, within the US. Please reach out with any questions or requests for additional images.

This description highlights the technical, historical, and collecting appeal of the Omega Seamaster 300 GMT 50th Anniversary (ref 2534.50), suited for discerning collectors and everyday wearers alike.