OMEGA Speedmaster Mark IV Professional - Reference 176.0012. - Lot 109

OMEGA Speedmaster Mark IV Professional - Reference 176.0012. Steel bracelet chronograph with automatic winding. Barrel case, smooth bezel, graduated internal tachometric scale, fluted crown, round pushers, screw-down caseback engraved in Seamaster medallion format with seahorse. Black dial, patina-painted luminescent baton hour markers, white baton minute track, white baton hands with patina-painted luminescent highlights, perpetual seconds at 9 o'clock, elapsed minutes totalizer in the center with plane and hour hand (on 12 o'clock) at 6 o'clock, central arrow second hand for chronograph function painted in white, 24-hour day/night indication at 12 o'clock, day and date window in French at 3 o'clock, painted logo. Movement: mechanical self-winding with oscillating weight. Caliber 1045. (circa 1974). Case, dial and movement signed. Case dimensions: 46 x 42 mm. Omega steel bracelet with Omega folding clasp - Reference 172. This reference takes the tonneau case from the Mark II and equips it with the caliber 1045, which was found in numerous Speedmaster variants in the 1970s, offering multiple complications.