The reference 6265 in 18k yellow gold was made in approximately 750 pieces. The dial is printed with “superlative Chronometer officially certified” according to the COSC movement. Movements caliber 727 se - lected for gold cases were sent to Bienne to be modified and refinished in order to function at Chronometer standards. Often references 6265 have 6263 casebacks or the other way around. This example has been maintained in particularly good condition, showing 3 deep hallmarks on the caseback, its black dial in near perfect condition with full lume plots perfectly matching the hands.