OMEGA REF. 105.012
SPEEDMASTER PROFESSIONAL STEEL
Omega, Speedmaster Professional, No.22089166,
Ref. 105.012- 65. Made circa 1965.
Fine and rare, water-resistant, stainless steel wristwatch with
round button chronograph, 12-hour and 30-minute registers and
tachometer. Accompanied by the original bezel (used).
Three-body, polished and brushed, integral crown and pusher
guard, black bezel with tachometer scale to 500 UPH, lyre lugs,
screw- down case back with Speedmaster logo, antimagnetic
protection cap.
Black with luminous painted baton indexes, outer 1/5th second
divisions, 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, self-compensating
flat balance spring, index regulator.