Omega Seamaster Professional GMT 300M (Ref. 2535.80.00)

We are pleased to present an exceptional, collector-grade example of the Omega Seamaster Professional GMT. This specific reference is highly coveted for its rare pairing of utilitarian dive heritage with a refined mechanical presentation, making it a standout addition to any serious collection.

​Offering Price: $4,950

Condition: Pristine / Museum-Quality Set

​Investment Highlights:

​Exhibition Presentation: Equipped with a sapphire crystal caseback displaying the historically significant Omega Calibre 2628 Co-Axial movement.

​Impeccable Preservation: The original blue aluminum GMT bezel insert is entirely free of scratches or fading, complemented by razor-sharp case lines and a tight, robust Ref. 1503/825 bracelet.

​Recent Factory Provenance: Freshly returned from a comprehensive, official Omega service. The watch passed rigorous vacuum, air, and 30-bar pressure testing, and is currently regulating within factory specifications at +4\text{ sec/day}.

​The Master Set Includes:

​Original Omega presentation boxes (inner red leather and outer protective casing)

​Operating Instructions manual

​Leather cardholder wallet

​Complete Tri-Card Set: Matching International Warranty Card, COSC Chronometer Certificate, and Pictogram Card.

​Official Omega service diagnostic and pressure test documentation.

​This piece offers absolute transparency, authenticated provenance, and immediate wearability with zero impending service liabilities. Private viewing and additional high-resolution imagery are available upon request.