Vintage Omega Cosmic Triple Calendar Moonphase Wristwatch (Tiffany & Co. Retailer Dial)

This is a mid-20th century Omega Cosmic triple calendar moonphase wristwatch, likely featuring a 14k or 18k yellow gold-filled or solid gold case. The watch has a light champagne or silvered dial that exhibits significant age-related patina and spotting. A key distinguishing feature is the 'Tiffany & Co.' co-branding below the Omega logo, indicating it was originally sold through the prestigious New York retailer. The dial displays dual apertures for the day and month, a center date hand pointing to an outer numeric track, and a moonphase complication integrated into the small seconds sub-dial at 6 o'clock. The hands include the classic dauphine style for hours and minutes and a blued-steel moonphase indicator. The condition shows heavy wear, with visible scratches on the acrylic crystal and substantial surface abrasions on the gold case and lugs. It is fitted with an aftermarket Speidel-style expandable metal bracelet, which is not original to the piece. This model typically dates to the late 1940s or early 1950s and is highly sought after by collectors for its complex mechanical movement and rare retailer signature.