LEAPING AHEAD

IWC updates the perpetual calendars in its Portugieser range with four new models

- ASHOK SOMAN

As you read this issue, a titan of watchmaking will have just celebrated his 90th birthday. Plenty of watches make it well past this mark but this reminds us that mere mortals often do not, even an august personage such as Kurt Klaus. In a leap year that sees the WOW team pay special attention to perpetual calendars, we were nevertheless surprised to learn of this momentous occasion while doing research on the aforementioned complication. Klaus is, of course most famous for his seminal work on the perpetual calendar for IWC, where he made a mark that is still felt today. If you have an IWC perpetual calendar from the Klaus era onwards, you bear testament to this legacy.

The perpetual calendar at IWC has two distinct phases before Kurt Klaus and after Kurt Klaus. As noted in our special in the Autumn issue of WOW, the perpetual calendar has not had many significant developments in the last 100 years. One of the few developments worth taking note of was Klaus' work in 1980s. According to IWC and plenty of published reports, Klaus was IWC's head watchmaker in the early 1980s, and he had it in mind to do the unthinkable improve on the mechanical perpetual calendar. To cut the suspense, this would go on to become the criminally underrated Da Vinci Chronograph Perpetual Calendar in 1985. Them's fighting words, as they say but it all makes sense when you consider that the all-indications-adjusted-by-one-crown system emerged from this multi-complication.