Omega Seamaster chronometer-grade watches are uncommon. This vintage Omega watch has a fabulous slate grey sparkle finish dial with quick-set day/date aperture, black inset steel baton markers and hands. The movement is the caliber 751, 24-jewel and adjusted to five positions and temperatures. The movement was just serviced and is accurate. The steel case is large; measuring 36.5mm with some minor marks from normal use. The watch looks much better in person, as my brightly lit close-ups show all the detail. The correct Omega winding crown is installed. The marks on the crystal are not there, as we installed a new crystal after the photos. This watch was made for the Japanese market, making it a collectable piece.