Morning All, After reading another thread, I’m now confused te the Speedy Moonwatch!! I thought that the Speedmaster Caliber 1861 was true to the original Calibre that went to the moon but the threads relating to the Ed White Speedmaster (first US spacewalk), suggest the watch had a 321 movement. I have a Sapphire sandwich 1861 and an original 1970 Seamaster running an early 861 movement. What actually is the scanario relating to this????