This is the Black Ring Crystal fitted to the 42mm Manual Wind Moon Watch with crown protectors from 1963 to present day.
These are Omega supplied service crystals for the 1963 105.003 up to the present day 145.022 case with crown protectors, this has the black ring as shown on image. I have the earlier silver ring crystals for the ck2915 ck2998 105.002 models on a different listing.
This was fitted to the models stated above including the 105.003, 105.012, 145.012, 145.022 etc.
063pw5139 Omega Speedmaster Crystal Black Ring 1963-Present Day 145.022 etc
Items can only be returned if either faulty, in the case of the item not being required then it must be returned exactly as received. For example if the item is new in a sealed packet and/or has protective covers in place then it must be returned the same otherwise item is no longer new and the value is greatly reduced, these items can only be returned/refunded by agreeing a lower value with Swiss Limited Editions before returning reflecting the new lower value of the item.