Our Reference No. MS2571
Model No. 145022-76ST
Movement: Manual Wind Cal. 861,
Case size: 40.0mm,
Material: Stainless steel case on Stainless bracelet.
Condition report: Good Condition with minimal wear to case and bracelet. Please look to image for more details.
Original box and Papers included not Included,
Our shop 12 months shop warranty
Personal viewing is required within regular shop hours.
This is an image of the actual watch.
Should you have any further questions, please get in touch.
PLEASE FIND MORE INFORMATION ON THIS WATCH BELOW!
Omega’s caliber 861 is the successor of the caliber 321 that Omega used in the Speedmaster from 1957 to 1968. I’ve been told once by one of the former Omega Archivists that the caliber 861 was actually used since October 1968, but that is something I can’t confirm based on data. Let’s just say the caliber 861 movement was introduced in 1968. Omega did so for two reasons: the movement was more accurate than the caliber 321 that ticked at 18,000vph (instead of 21,600) and it was also cheaper to produce.