As we celebrate the first trip to the moon:
Naturally the watches of choice were the Speedmasters.
James McDivitt, NASA S/N 60 wore a ref 105.012-CB (verified- National Air and Space museum).
https://airandspace.si.edu/collection-objects/chronograph-mcdivitt-apollo-9
David Scott- no information – S/N64. Unfortunately I could find no information on this piece anywhere.
Russell Schweickart: S/N 55: It looks like a either a 105.012-66 or 145.012-67. After intense analysis of the case/case back and lugs, I am very confident that is was the first 145.012 in space.- ref. unverified. Pic: National Air and Space museum
Summary;
McDivitt: ref 105.012-66 CB case : verified
Scott: unknown likely 321 calibre probably 105.012-?
Schweickart: ref 145.012-67 – UNVERIFIED
I am exceptionally grateful for the pictures which are being used for education purposes only to NASA and the Smithsonian National Air and Space museum