18K YG Patek Philippe mans wrist watch, inside of back stamped 750, Ref 3411, SN 2619404, movement stamped 18 jewel, adjusted to 5 positions, SN 708991, Ref 27SC, center sweep second hand, excellent working condition, early 1960's, on an associated 14K YG bracelet, runs when wound, in same family since new, initials engraved on back of case. Some discoloration at right edge of dial, no evidence of any discoloration on movement.The movement bezel inside the case shows some green discoloration near the area behind 3 o'clock corresponding with the dial discoloration.