OMEGA REF. 145.012
SPEEDMASTER PROFESSIONAL STEEL
Omega, "Speedmaster Professional," No. 26543552,
Ref. 145.012- 67 SP. Made circa 1967.
Fine, water-resistant, stainless steel wristwatch with round
button chronograph, registers, tachometer
Three-body, polished and brushed, screwed-down case back
engraved with the Speedmaster logo, anti-magnetic protection
cap, tachometer graduation on the bezel to 500 UPH, lyre lugs.
Black with luminous baton indexes, subsidiary dials for the
seconds, the 12-hour and 30-minute registers. Luminous white
baton hands.
Cal. 321, copper-colored, 17 jewels, straight-line lever
escapement, monometallic balance, shock absorber, selfcompensating
Breguet balance spring.