SR WATCHES | PERPETUAL CALENDAR

PERPETUAL CALENDAR

For the Perpetual Calendar, the date indication is retrograde with a central hand (a coil spring ensures the retrograde hand instantly returns to the start) and moonphases (one-day correction every 122 years) for both the Southern and Northern hemispheres. The month and day of the week are displayed in an aperture (with discs placed below), as is the leap-year cycle, thanks to the application of a month programming wheel constructed with 49 notches. If worn every day, it will not be necessary to adjust the date, day, month and year until 28 February 2100. According to a rule of the Gregorian calendar, calculated according to mathematical criteria, years with numbers that are multiples of 100 are only leap years if they are also multiples of 400; as a result, 2100, 2200 and 2300 will not be leap years. The Javelin hands are in gold-plated steel with an arrow pointer finished with SuperLuminova, and a central second pointer with an octagonal counterweight. The case body marks the sides of the octagon, linked by angular indentations in an upturned “V” shape which flow seamlessly thanks also to a double parallel linear engraving. This is interrupted by the well-dimensioned pressure-sealed crown with deep-set engravings on the edge and an onyx cabochon finish.

PERPETUAL CALENDAR
DIAMOND LUX LIMITED EDITION

WATCHCASE