Important Collectors' Wristwtches, Po...

New York, Sep 26, 2007

LOT 189

?Mark IV? Omega "Speedmaster Professional Mark IV", Automatic, Ref. 176.009. Made circa 1973. Fine, self-winding, water-resistant, tonneau-shaped, stainless steel wristwatch with date, round button chronograph, registers, tachometer, 24 hours with night/day indication and stainless steel Omega link bracelet and clasp.

C. Two-body, polished and brushed, screwed-down case back with the Speedmaster logo, hooded lugs. D. Black with luminous indexes, subsidiary dials for the seconds and the 12-hour registers, the 24 hours with night/day indication by means of an arrow on an under-disc, 60-minute register by means of a fourth cross-shaped central hand, outer tachometer graduation on a black ring under the crystal and outer 1/5th second scale, aperture for the date, mineral glass. Luminous white "bâton" hands. M. Cal. 1040, copper-colored, 22 jewels, straight-line lever escapement, monometallic balance, shock absorber, selfcompensating flat balance-spring. Dial, case and movement signed. Dim. 42 x 45 mm. Thickness 15 mm.