Brand Omega, Bienne / Biel Model ‘Speedmaster’ ‘Professional’, so-called ‘Ultraman’ Retailed by / made for retailed on the French market Year circa 1968 Reference ST 145.012 Movement No. 26 077 794 Calibre 321, manual-winding, 17 jewels Case - Material/s stainless steel Bracelet brown leather strap Buckle stainless steel pin-buckle Dimensions Ø 39.7 mm. (bezel) 47.5 x 42 mm. Thickness 13.9 mm. Weight 70.6 gr. (approx.) Signature dial, case and movement Accessories original fitted boy and outer box; Extract from the Archives Omega Ref. ST 145.012, chronograph, minutes and hours counters, black dial, orange chronograph-hand, calibre 321; ‘Speedmaster Professional’, so-called ‘Ultraman’; stainless steel Stainless steel, manual-winding, round-shaped, gentleman’s wristwatch, with subsidiary seconds at 9 and three horological complications: 1/5 second chronograph (activated by the two round-shaped push-pieces located on the case-band) with orange chronograph-hand and tachometric scale graduated on the bezel for 500 units per hour Half-instantaneous 30-minute counter (subsidiary dial at 3 o’clock) Dragging 12-hour counter (subsidiary dial at 6 o’clock) Case: three-piece, polished and satin-finished, water-resistant with screwed case-back; polished crown; stainless steel bezel with black insert. Case-back stamped in the centre with the Omega logo, the seahorse and the name ‘speedmaster’. Dial: black colour, with radiating luminous indexes, black colour auxiliary dials with white painted suspended Arabic numerals; white painted luminescent ‘Bâton’ hands and orange chronograph-hand. Movement: calibre 321 (based on Lemania 2310), manual-winding, 17 jewels; movement protected inside a soft iron calotte (protective container) against magnetic fields. The Extract from the Archives (No. 38 190), dated July 20, 2022, mentioned that this watch was delivered on June 06, 1968, to the French market; with the remarks: ‘Special model fitted with an orange chronograph hand’.
