Up for grabs is an Omega Speedmaster Professional
305840XX serial number circa 1970 production
This is a Pre-Moon transitional model with cal. 861 movement.
Excellent vintage condition case case with sharp lugs.
Beautiful step dial with nice patina on plots and original hands.
Bezel is correct and original “Dot Over 90” with blue hue from age.
Caseback is original, clear Hippocampus on back, stamped 145.022-69 inside.
Crystal is Omega hesalite with logo in center.
Watch comes on unworn leather strap. No service history is known.