Reference 105 003, pre-moon Speedmaster Cal 321, commonly known as the Ed White version requires no further introduction. This one is dated 1964 on caseback. As far as I can tell the bezel (DON) is the original fitted, has Omega logo plexi, dial is aged and original, pushers are original, only the Omega signed crown may have been replaced. The watch came with the original 7912 bracelet dated 1 65, with signed 6 endlinks, with box and papers. Papers show it was sold in November 1965, so all good there. Sorry for crappy photos, they don't do the watch justice!
Nice! Very cool find. Jealous of your 6 endlinks and B&P. Not the original Chrono hand but you can find a replacement if you wanted one. Have fun with it.
Congrats. Fantastic blue-grey hue to the bezel insert. As noted, chrono hand is not original and the crown has been replaced (should be 24 tooth) but still a nice package.