OMEGA REF. 145.012 SPEEDMASTER PROFESSIONAL STEEL
Omega, "Speedmaster Professional," No. 25007158, Ref. 145.012- 67 SP. Made circa 1967.
Fine, water-resistant, stainless steel wristwatch with round button chronograph, registers,
tachometer and a stainless steel Omega bracelet.
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 (service), lyre lugs.
Grey 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.