OMEGA Constellation "Marine Chronometer" - Reference 198.074 - Lot 148

OMEGA Constellation "Marine Chronometer" - Reference 198.074. Professional quartz steel marine wristwatch. Rectangular case, smooth 14K 585 thousandths gold screw-down bezel, fluted crown, screw-down caseback. Black dial, white-painted baton hour markers, white-painted baton minute track, luminescent baton hands, date window at 6 o'clock. Movement: quartz. Chronometer-certified 13-jewel Calibre 1510 - Numbered 34913413 (circa 1972). Case, dial and movement signed. Case dimensions: 33 x 50 mm. Omega steel bracelet with folding clasp - Reference 1277/212. This watch is a perfect illustration of Omega's quest for precision, with the Battelle Institute in Geneva as its partner. After a meticulous and painstaking gestation period, this version of the Megaquartz was presented in prototype form at the 1970 Basel Fair with the 1,500 caliber. The first commercialized version was presented in 1972 with the 1510, the first watch to feature time adjustment without changing the placement of the minute hand. Thanks to its very high frequency.