Check the listing for details. OMEGA SPEEDMASTER Cal. 861 Moonwalk MOVEMENT HOLDER Ref. 145.022. Condition: Pre-owned. Listed at 50.00 USD. OMEGA SPEEDMASTER Cal. 861 MOVEMENT HOLDER Ref. 145.022. Often missing is this necessary movement ring or Movement Holder used to secure the movement to the case so that the chronograph functions correctly. Its 32mm outside and 27mm inside. This is an original Omega factory ref. 861 movement holder part. Never used and just removed from original Factory inventory. THIS IS A FINE COLLECTIBLE. DON'T INVEST IN THE STOCK MARKET. BUY SOMETHING PROVEN IN TIME. NOTE: We have been selling vintage watches on E-Bay since 1998 as watchco1973 with over 13,500 vintage watch sales and 100% positive feedbacks. Sponsored by watchco1973.com. You can buy from us with confidence. OTHER NICE FEATURES: Free U.S. Shipping. $58.00 overseas.