Omega Speedmaster Pre-Moon Caliber 321

Early stainless steel Omega Speedmaster Caliber 321, so-called ‘Pre-Moon’, water-resistant, stainless steel wristwatch with round button chronograph, Omega steel bracelet, registers, black bezel with tachometer graduated to 500 UPH is a 40mm circa 1966 chronograph with screwed-down case back engraved with Speedmaster logo, and Omega winding crown. The black dial has painted luminous baton indexes, outer 1/5th seconds track, subsidiary dials for the seconds, the 12-hour and 30-minute registers, luminous steel epee hands.  The caliber 321 17 jewel movement is warrantied by Aaron Faber for 2 years.