Omega Speedmaster 145.012-68SP

Omega

Brand Omega, Bienne / Biel Model Speedmaster Dot Over Ninety (DON) bezel Retailed by - Year circa 1968 Reference 145.012-68 SP Movement 27 321 772 Calibre 861, manual-winding, 17 jewels Case unnumbered (by HF, Huguenin Frères, Le Locle) Material/s stainless steel Bracelet black leather strap Buckle vintage stainless steel Omega pin-buckle Dimensions Ø 41.9 mm. 47.8 x 41.9 mm. Ø 39.6 mm. (bezel) Thickness 13.4 mm. Length - Weight 70 gr (approx.) Signature dial, case and movement Accessories Omega Boutique Zürich attestation (dated December 10, 2024) Omega Ref. 145.012-68 SP, large chronograph, minutes and hours counters, calibre 861, special prototype matte grey Ardoise dial, Dot Over Ninety (DON) bezel Speedmaster stainless steel Stainless steel, manual-winding, round-shaped, large gentleman’s wristwatch, with subsidiary seconds at 9 o’clock and three horological complications: 1/6 second chronograph (activated by the two round-shaped push-pieces located on the case-band; start, stop and return to zero functions) with outer tachometric scale graduated on the bezel for 500 units per hour Half-instantaneous 30-minute counter (subsidiary dial at 3 o’clock) 12-hour counter (subsidiary dial at 6 o’clock) Case: three-piece, polished and satin-finished, water-resistant with screwed case-back; polished Omega crown; stainless steel Dot Over Ninety (DON) bezel with graduated black insert. Case-back stamped in the centre with a seahorse, the logo Omega, and the name speedmaster. Dial: matte grey Ardoise colour, prototype, with radiating luminescent indexes and double dots at 12 o’clock; black colour subsidiary stepped dials, with white painted suspended Arabic numerals and radiating lines; external minute track divided five by five, with 1/5th of a second, with white painted radiating lines; steel skeleton luminescent Bâton hands. Movement: calibre 861, manual-winding, 17 jewels; movement protected inside a soft iron calotte (protective container) against magnetic fields.