Important Collectors' Wristwatches, P...

New York, Mar 05, 2009

LOT 456

Mark 4.5 Omega ?Speedmaster, Automatic,? Ref. ST 176.0012. Made in the late 1970s. Fine and rare self-winding, water-resistant, tonneau-shaped, stainless steel wristwatch with day, date, round button chronograph, 12-hour register, central minute recorder, tachometer, the 24 hours with night / day indication, and a stainless steel Omega bracelet with deployant clasp.

C. Two-body, (patent CH 508.925) polished and brushed, screwdown case back with the embossed ?Seamaster? logo, hooded lugs, tachometer scale graduated to 500 UPH reverse-painted on the sapphire crystal. D. Midnight blue with luminous baton indexes, outer Arabic fine minutes and minute/fifth second scale, black subsidiary dials for the seconds and the 12-hour register, the 24 hours with night/day indication by means of an arrow on a revolving disc, 60-minute register by means of a central white jet hand, apertures for the day (in French) and date. Luminous white baton hands. M. Cal. 1045, copper-colored, 17 jewels, straight line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring. Dial, case and movement signed. Dim. 42 x 45 mm. Thickness 15 mm. Approx overall length 173 mm.