#firstwatchwornonmoon

Information about the Omega Speedmaster chronographs used during  NASA’s and Russia's manned space programs:

Apollo era Speedmasters: https://www.hq.nasa.gov/alsj/omega.html

Pre-Moon Speedmasters & NASA: https://monochrome-watches.com/omega-speedmaster-history-part-1-early-pre-moons/

http://www.watchprosite.com/?page=wf.forumpost&fi=677&ti=1054643&pi=7607273

Check Your Speedmaster production date: https://www.ilovemyspeedmaster.com/productiondateprediction/