The Omega reference 105.012 was released in 1964 and has been affectionately named the “Moonwatch” as the 105.012 would be used to accompany Apollo astronauts on several missions during the late 1960s and early 1970s. The reference was the first to feature the “Professional” signature on the dial and the larger 42mm case size with crown guards. This reference is where we see the Omega Speedmaster evolve and take the shape that is still made to this day.

Ref Variations: S105012, 105012-66,