There were a bunch of watches worn on the moon. The speedy was the first however. Many astronauts carried their own personal Rolex's as they preferred them over the speedmaster's.
Wow, gen caseback looks amazing! My franken needs one of those and a better crystal, everything else is already gen other than movement and case.
I think I might have a few spare links, maybe even an entire spare bracelet. lemme check.
Another example of what can be done with the new cartel 5513.
WSO 580's, WSO gen spec spring bars, MBK bracelet, WSO bezel assembly, gen service insert, clarks crystal, athaya crown/tube, yuki dial/hands. reshaped case, aged dial, drilled lugs and voila!