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  • Writer's pictureMarc Jenni

Perpetual Calendar Retrograph

Location: St-Sulpice, Vaud, Switzerland

Date: October 1, 2007



Based upon the successful and ingenious Tiffany Mark T-57 Tri-Retrograde Chronograph launched in 2006, we developed together with Geneva-based Agenhor a new product extension. The Tiffany Mark Perpetual Calendar Tri-Retrograde Chronograph which combines the retrograde chronograph movement with an Agenhor perpetual calendar module.



The result is a quite intriguing complication which shows all calendar indication on individual discs just beneath the dial plate. This allows easy readability throughout all chronograph and calendar indications.



The perpetual calendar indicates the month, day, date and leap year while also showing the moon phase.  If left continuously running, this movement will not need any manual adjustments until the year 2100. The Leap Year indicator is noted with a circle opening located between the 1:00 and 2:00 position.



Individually numbered from 1 to 8, a total of only 8 watches have been manufactured.


Detailed view on the retrograde movement module with the 3 levers and the hand decorated 22K gold oscillating mass with diamond-cut logo and "guillochage grain d'orge".



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