From what I gather the 1168 came in two versions: an earlier Omega logo buckle without trapezoid and a later Omega logo within a trapezoid. I am trying to determine which version of 1168 should go with an Omega Anchor Admiralty 166.054. I have seen 637 and 638 end pieces utilized for the watch. Can anyone confirm which version of 1168 and which end pieces originally came with this watch?

 

According to this list, your watch reference 166.054 (166.0054) came on both 1122/608 and 1168/638
https://omegaforums.net/threads/case-bracelet-endpiece-list.81618/

Can not help with logo on clasp cover.

More info:
https://omegaforums.net/threads/comprehensive-omega-admiralty-thread.69037/
https://omegaforums.net/threads/omega-admiralty-diver-166-054-light-diver-for-individualists.71732/

 

Thanks @zoohannover

From what I can determine the second version of 1168 utilized screws to hold the links instead of pins and was not used in the Apollo Soyuz.

Anyone have info on which Omega references the second version of 1168 was paired with?