Reference: 4173/002Date: Circa 1980Movement: 18-jewel Cal.16-250 manual wind, No.1263397Dial: Sunburst blue, applied gilt baton hour markers, gilt pointed baton handsCase: Brushed and polished cushion form, snap on back, diamond set white gold bezelStrap/Bracelet: Integral open work linkBuckle/Clasp: Signed folding claspSigned: Case, dial & movementSize: 23mm Accompaniments: Patek Philippe box, Certificate of Origin