Deke Slayton’s personally-owned Omega Speedmaster Professional wristwatch. Black-faced, stainless steel chronograph, manual wind wristwatch with a Plexiglass crystal, solid case back, anti-vibration and anti-magnetic dust cover, black tachymeter bezel and sub-dials, without date or day complications, powered by a caliber 861-based movement. Engraved on the case back is, “Flight Qualified by NASA For All Manned Space Missions / The First Watch Worn on the Moon.” There appears to be tritium powered phosphorescent lumen on the hands and index markers of the watch. A two-tone stainless steel replacement wrist band is mounted on the watch. Prior to the auction sale by the Slayton Family, this watch was professionally cleaned and put into fully functioning order. While Deke Slayton’s flown Omega watch is presently recorded as being in the Smithsonian collection, this watch was found among his effects after his passing in 1993. In fine condition. Provenance: The Donald K. Slayton Collection; Goldberg, 2012. RR Auction COA.