Omega. An extremely rare 18K gold dual time zone chronograph wristwatch with bracelet Signed Omega, Flightmaster, Flightmaster De Luxe model, ref. BA 345.801, movement no. 31'631'070, manufactured in 1971 Movement: cal. 910, manual, 17 jewels, signed Dial: signed Case: screw back with engraved airplane symbol, “flightmaster” and “O” inscription, 43 mm. wide, signed With: 18K gold Omega link bracelet, deployant clasp stamped 345.0801, overall bracelet length approx. 185 mm., period Flightmaster instruction manual, Extract from the Archives confirming production of the present watch with 18K gold bracelet in 1971 and its subsequent delivery to Ecuador on 10 September 1973