3100. 3100Y (25630301/1) Cartier. A stainless steel automatic calendar wristwatch Cartier. Stainless steel wristwatch with date automatic movement Model: Calibre Reference: 3389 Date: Purchased 26th April 2012 Movement: 27-jewel automatic Dial: Silvered and textured, signed Case: Brushed tonneau form, exhibition back secured by 8 screws, No.745026RX Strap/Bracelet: Cartier black alligator leather Buckle/Clasp: Signed stainless steel brushed folding clasp Signed: Case, dial & movement Size: 42mm Accompaniments: Cartier box, outer card, Certificate and Guarantee booklet, Instructions manual, Cartier DVD