Omega Speedmaster Professional 145.022-67, stainless steel wristwatch with black dial, round button chronograph, 12-hour and 30-minute registers, tachometer scale.
Case. Three-body, polished and brushed, screwed-down case back engraved with the Speedmaster logo, anti-magnetic protection cap, tachometer graduation on the black bezel to 500 UPH, lyre lugs, hesalite crystal. From Huguenin Frères SA
Dial. Black dial with baton indexes with even luminous, outer 1/5th seconds track, subsidiary dials for the seconds, the 12-hour and 30-minute registers. matching Luminous white baton hands.
Movement. Cal. 321, copper-colored, 17 jewels, straight-line lever escapement, monometallic balance with timing screws, shock absorber, self-compensating Breguet balance spring, index regulator. Serial: 26546XXX
Model: Speedmaster Professional
Reference: 145.012-67 SP
Diameter: 42 mm Thickness: 14mm
Launched in 1957 as a sport and racing chronograph, the Speedmaster model has become one of the most well-known chronograph models ever. The first Speedmaster model was the reference 2915, featuring a distinctive luminous broad-arrow shaped hour hand. It was outfitted with the caliber 321, which would be used until 1968, when it was replaced by the caliber 861.
Starting in 1962, NASA began testing a series of chronograph watches from various brands (including Breitling, Longines, Rolex, and Omega) for their astronauts to wear to space. Only three watches passed the first round of “Qualification Test Procedures” and went on to final stages of testing. Omega’s Speedmaster chronograph was the only model to pass final testing, and went on to space. Following this event, Omega added the word “Professional” to the dials of their Speedmaster models, and gave them a new reference number – 145.012.
The present watch is a mint example of a Speedmaster Professional reference 145.012. Featuring the “pie-pan” dial that has a clear step from the outer minute division ring. The dark shade of grey compliments the luminous numerals, which have aged to a warm orange-brown shade. The lugs feature sharp facets and the crisp case back logo engraving add to the desirability of this example, and will be enjoyed by a collector for years to come.