In honour of the brand’s jubilee, this split-seconds chronograph, first patented in the late 1940’s, has been produced in a limited, numbered series of 50 pieces in 750 (18K) pink gold and 100 pieces in stainless steel. It features a complete calendar with a unique setting system operated by the rotating bezel instead of the pushpieces. A black spot indicates the position of the hammer and there is an audible click when the month (at 2 o’clock), date (at 6 o’clock) and day (at 10 o’clock) are set. The hand-engraved movement is visible through the case back.