OMEGA REF. 145022 SPEEDMASTER
PROFESSIONAL CHRONO STEEL
Omega, movement No. 48277400, Ref. ST 145022. 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.