This Omega Speedmaster Ref. 145.012-67, powered by the legendary Caliber 321 manual-winding movement, is an iconic chronograph that played a pivotal role in space exploration. Produced in 1967, this model features a 42mm stainless steel case with twisted lugs and the classic black tachymeter bezel, designed for high-precision timing. The original step dial, adorned with tritium lume plots, showcases the distinctive applied Omega logo and three subdials for measuring elapsed time. This reference was the last Speedmaster to use the Caliber 321 before Omega transitioned to the 861 movement. Paired with the original Omega 1039 bracelet, this timepiece maintains its period-correct authenticity. Highly sought after by collectors, the 145.012-67 remains a cornerstone of the Speedmaster legacy, embodying the spirit of adventure and precision engineering that defines Omega’s heritage.