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The Omega Seamaster Calendar is one of those quietly important references in Omega’s mid-century catalog. Introduced in 1956, the Ref. 2849 represented a genuine milestone for the Seamaster line: it was among the first to pair Omega’s robust automatic winding system with a date complication, bridging the gap between the utilitarian military-derived Seamasters of the late 1940s and the more refined sport-luxury watches that would define Omega’s 1960s output. In a decade when the wristwatch was rapidly evolving from wartime instrument to everyday essential, the 2849 offered the kind of thoughtful, functional sophistication that made Omega the brand of choice for professionals, adventurers, and anyone who simply demanded the best from their daily wearer.
At the heart of the 2849 sits Omega’s Caliber 503, a 20-jewel automatic movement from the celebrated 30mm series, beating at 19,800 vibrations per hour with a 46-hour power reserve. The 503 was notable for its date function and its clever quick-set mechanism, which advanced the date by sweeping the hands backward past 10 o’clock and forward again. It’s a beautifully engineered movement, featuring Omega’s characteristic copper-toned bridges and a full central rotor that speaks to the brand’s commitment to in-house excellence during this golden era of Swiss watchmaking. The 34.5mm stainless steel case is pure 1950s luxury sports watch design: a smooth polished bezel, a press-fit caseback bearing the iconic Seamaster seahorse medallion and “WATERPROOF” designation, and those distinctive broad lugs with crisp chamfered edges that give the watch a substantial, muscular feel on the wrist that its diameter alone wouldn’t suggest.
This particular example is a genuinely compelling specimen, and for one very specific reason beyond its overall honest condition: it retains its original acrylic crystal complete with the factory cyclops magnifier over the date aperture at three o’clock. This is a detail that, on a watch approaching seventy years of age, is remarkably rare to find. Crystals are consumable parts, the first thing to get swapped during a service, and finding a 2849 with its original cyclops-equipped crystal intact is a real collector’s find. The dial has aged beautifully, taking on a warm, creamy champagne tone that gives the entire watch a rich, inviting warmth. The applied faceted indices remain crisp and firmly seated, catching light with that sculptural quality that only hand-riveted markers can deliver. The Dauphine handset retains its original dark finish, and the printed Omega logo, “AUTOMATIC” designation, and cursive “Seamaster” script are all clean and well-preserved. There is some gentle patina visible around the lower portion of the dial and near the date window, along with faint crazing around the date aperture, but these are the honest marks of a watch that has been worn and loved, not neglected.
The stainless steel case remains in strong shape, with those chunky lugs retaining their intended proportions and the chamfers still catching light with definition. The signed Omega crown sits properly, and the caseback’s seahorse medallion is clearly defined. The Caliber 503 inside presents with its characteristic copper-finished bridges and rotor, looking clean and well-maintained.
For the collector seeking an entry into serious vintage Omega ownership, or for the seasoned enthusiast who appreciates the subtleties that separate one example from another, this Seamaster Calendar 2849 is a compelling proposition. It’s the kind of watch that wears far larger than its 34.5mm case size thanks to those substantial lugs, looks equally at home with a suit or a weekend sweater, and carries just enough honest patina to remind you that you’re wearing a piece of genuine mid-century history. The original cyclops crystal is the cherry on top, a detail that collectors who know will immediately appreciate.
