Omega Watches

  Model: Omega Seamaster De Ville Year: 1975 Case size: 42mm (very large for a vintage De Ville; likely a “C-case” or modern-style dress/Seamaster hybrid) Case material: 14K gold-filled (not solid 18K) Movement: Automatic (likely a cal. 1020 or 1030 series, common mid-70s Omega automatics) Reference: KM6326 This watch straddles vintage dress and modern oversized style for the time. 1970s Omegas were experimenting with bolder cases and integrated bracelets, especially in the Seamaster and De Ville lines.  Movement Most 1970s Seamaster De Ville automatics in 14K GF cases use Omega in-house calibers: Cal. 1020/1030: 28,800 bph, automatic, date complication Reliable, robust movements Servicing is straightforward today If you can open the caseback, the movement serial number will precisely date it and confirm caliber.

  Omega Seamaster “Big Blue” Reference: 176.004 Production: ~1970–1972 Nickname: Big Blue Category: Professional dive chronograph Core Specs Case: Stainless steel monobloc (front-loading) Diameter: ~46 mm Thickness: ~15.5 mm Water resistance: 120 m (original rating) Crystal: Mineral (originally) Movement: Omega Caliber 1040 Automatic chronograph Column wheel 22 jewels 28,800 bph Functions: Chronograph (12-hour totalizer) Central chronograph minutes Date at 3 Running seconds at 9 This was Omega’s first automatic chronograph movement , developed with Lemania (the same brain trust behind Speedmasters). Why It’s Called “Big Blue” Massive 46 mm case — absolutely enormous for the early ’70s Striking blue dial and blue anodized aluminum bezel Bold white hands and orange chronograph accents One of the loudest, most unapologetic dive chronographs ever made It wears huge , but in a very intentional, tool-wa...