Important Collectors' Wristwatches, P...

New York, Dec 09, 2009

LOT 34

Racing Speedmaster Mark II Omega, ?Speedmaster Professional, Mark II,? No. 31618078, Ref. ST 145.014. Made in 1970. Fine and rare, tonneau-shaped, water-resistant, stainless steel wristwatch with round-button chronograph, registers, tachometer and a stainless steel Omega link bracelet with deployant clasp. Accompanied by a fitted Omega box and instruction manual. To be sold without reserve

C. Two-body, solid, polished and brushed, screw-down case back with Speedmaster logo, tachometer scale graduated to 500 UPH reverse-painted on the sapphire crystal. D. Black with painted luminous baton indexes, outer minute/seconds and 1/5th seconds divisions in white and orange, subsidiary dials for the constant seconds, the 30-minute and 12-hour registers. Luminous white baton hands, orange hand for the chronograph function. M. Cal. 861, copper-colored, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring, micrometer regulator. Dial, case and movement signed. Dim. 41 x 45 mm. Thickness 14 mm.