3011. 3011Y Patek Philippe. An 18K gold manual wind wristwatch Patek Philippe. An 18K (750) yellow gold mechanical movement wristwatch Model: Calatrava Reference: 2581 Date: Circa 1960 Movement: Jewelled manual wind, Cal.10-200, No.744716 Dial: Brushed silvered, black baton hour markers with gilt applied baton quarters, running seconds at 6, gilt pointed baton hands Case: Polished round, snap on back, No.691017 Strap/Bracelet: Brown alligator leather Buckle/Clasp: Omega gold plated buckle Signed: Case, dial & movement Size: 33mm Weight: 35,61g