This is a fine example of a vintage Omega Genève model, produced around the mid-1970s. The Genève line was known for combining reliable automatic movements with a classic, understated style suitable for everyday wear. The reference 166.0173 is typically housed in a stainless steel case and features Omega's advanced automatic Caliber 1012, which offers modern conveniences like quick-set date functionality. Key Features: Brand: Omega Collection/Series: Genève Reference Number: 166.0173 Year of Production: Circa 1970s Movement: Automatic (Self-winding) Mechanical Caliber: Omega Caliber 1012 Features of Caliber 1012: Hacking seconds (the seconds hand stops when the crown is pulled out), and quick-set date function. Case Material: Stainless Steel Case Diameter: Approximately 36 mm (A classic mid-size diameter) Lug-to-Lug: Approximately 42-43 mm Crystal: Acrylic (Plexiglass) or possibly Mineral Crystal typical for the era. Crown: Original Omega signed crown Water Resistance: Due to its vintage age, water resistance cannot be guaranteed and is not recommended for water exposure. Functions: Hour, Minute, Sweep Seconds, and Date display (usually at 3 o'clock). This Omega Genève reference 166.0173 is a highly collectible vintage piece that represents the era's transition to more streamlined, functional automatic watches.