Omega Speedmaster Professional Moonwatch, 105.012-65

Omega Speedmaster Professional 145.012-67 SP

* Brand: Omega
* Model: Speedmaster Professional “Pre-Moon”
* Reference: 145.012-67 SP
* Year: Circa 1968
* Movement: Omega Caliber 321
* Movement type: Manual wind, column-wheel chronograph
* Jewels: 17
* Movement serial: Approx. 26.84 million based on supplied photo
* Case: Stainless steel, asymmetrical twisted-lug case
* Case diameter: 42 mm
* Lug width: 20 mm
* Crystal: Hesalite/Plexiglass
* Dial: Black stepped dial
* Logo: Applied Omega logo
* Lume: Tritium
* Dial marking: “T SWISS MADE T”
* Bezel: Vintage tachymeter DON — Dot Over Ninety
* Functions: Hours, minutes, small seconds, 30-minute counter, 12-hour counter, central chronograph
* Caseback: Pre-Moon Seahorse/Hippocampus caseback
* Inside caseback: 145.012-67 SP
* SP: “Special Pushers,” referring to the larger/more robust pusher construction.