3069. 3069Y IWC. An 18K gold automatic perpetual calendar chronograph wristwatch with moon phase IWC. Chronograph wristwatch in 18K (750) yellow gold perpetual calendar with moon phase automatic movement Model: Da Vinci Reference: IW3750 Date: Circa 1990 Movement: 36-jewel Cal.79061 automatic Dial: Silvered, applied gilt faceted baton hour markers, black outer 1/5th second divisions with luminous 5 minute markers, sunken subsidiary dials at 3, 6, 9 and 12 for day, date, month, moon phase, constant seconds, 30 minute and 12 hour recording, year indication between 7 and 8, gilt pointed baton hands with luminous inserts, centre chronograph hand Case: Polished round, snap on back, stepped bezel, hinged lugs, screw down crown flanked by twin pushers, No.2433913 Strap/Bracelet: Brown alligator leather Buckle/Clasp: Signed 18K gold buckle Signed: Case, dial & movement Size: 39mm Weight: 90,38gr