OMEGA Ref 2639 Black Dial Sub Second (1951)Rare and attractive factory original black dial in excellent condition Luminous hour indexes with arabic numerals and original luminous syringe hands Sub second feature, marked "Swiss Made" 35 mm stainless case 18 mm lugs Case ref 2639 4 Calibre 265 Movement serial number 12459670 Signed crown This watch comes fully serviced and in excellent working order, with a brand new leather strap and Omega buckle