OMEGA REF. 145022 SPEEDMASTER
PROFESSIONAL CHRONO STEEL
Omega, movement No. 45583803, Ref. ST 145022-78 ST.
Made circa 1980.
Fine, water-resistant, stainless steel wristwatch with round
button chronograph, registers, tachometer and a stainless
steel Omega link bracelet with deployant clasp.
Three-body, polished and brushed, lyre lugs, dust cap,
screwed- down case back with central Speedmaster logo
and engraved: "First Watch Worn on the Moon, Flight-
Qualified by Nasa for All Manned Space Missions," tachometer
graduation on the black bezel to 500 UPH.
Black with luminous baton indexes, subsidiary dials for
the seconds, the 12-hour and 30-minute registers. Luminous
white baton hands.
Cal. 861, copper-colored, 17 jewels, straight-line lever
escapement, monometallic balance, shock absorber,
self-compensating flat balance spring, micrometer regulator.