Very nice Omega Speedmaster pre-moon ref. 145.022-68. This “transitional” reference is interesting in the Speedmaster history as it is the very first model fitted with the caliber 861. Aesthetically, this reference is identical to the last 321 (ref. 145.012) because its “step” dial still has the applied logo and long indexes.
The “dot next to 90” bezel has developed a very nice grey patina.
Original plexiglas with Omega logo.
The movement has been fully serviced by a professional watchmaker specialized in chronographs.