OMEGA Speedmaster ref.105.012-66 circa 1966 Watch OMEGA Speedmaster ref.105.012-66 circa 1966 Steel bracelet chronograph watch. Round case with lyre handles (Huguenin Frères) with external tachymeter bezel and “Don” insert. Screwed back with Speedmaster logo. Crown signed. Dust protection. Black step dial with three sub-counters, painted logo (circa 1969). Chrono seconds hand with right counterweight. Omega 861 mechanical movement (reported around 1969). Original "flat link" steel bracelet reference 1039 (546). Diameter: 42mm Lug: 20mm
