This is a marvelous and gorgeous vintage Omega Seamaster Chronograph watch. The watch works excellently (just serviced), and all chronograph features work correctly. The manual wind chronograph movement is an Omega calibre 321 with 17 jewels—the movement serial number dates this watch to 1963—unpolished gold plated over steel case in good condition. Visible minor oxidation on all four case lugs. The case measures 35.5mm across, excluding the crown by 43.6mm from lug tip to lug tip. The case model is 105.001. The acrylic crystal is new, covering a stunning original factory finish dial. You can see minor marks on the dial, where two of the small dial has marks and the right one has a few dimples. It will come with a new 18mm genuine leather strap. The wrist size in the photo is 6 inches.