Model: Submariner Reference: 5513 Date: Circa 1968 Movement: 26-jewel Cal.1520 automatic, free-sprung Gyromax Glucydor balance Dial: Black, luminous dot hour markers, baton quarters, white outer minute divisions, polished Mercedes hands with luminous inserts, centre seconds Case: Brushed and polished tonneau form, screw down back with engraved initials dated 31-7-82, inside back date coded IV.67, shouldered screw down crown, calibrated bezel, No.1805131 Strap/Bracelet: Brushed 78360 Oyster link Buckle/Clasp: Signed folding clasp, stamped VE Signed: Case, dial & movement Size: 39mm 注脚 Rolex introduced the reference 5513 in 1962, and produced the reference until the mid-1980's. The model is recognizable by its lack of date feature, allowing the dial to have a well-balanced design. Early examples of the 5513 featured a glossy black dial with gilt text, and in the mid-1960's, Rolex started producing the reference with a matte dial and white printing. These dials featured the depth rating with meters indicated first "200m=660ft", and towards the end of the 1960's Rolex began producing dials with the depth rating that indicated feet first as with the present example.