![Kurt Klaus, the inventor of the ingenious autonomous IWC perpetual calendar mechanism turned 80. – Watch-Insider.com Kurt Klaus, the inventor of the ingenious autonomous IWC perpetual calendar mechanism turned 80. – Watch-Insider.com](https://watch-insider.com/wp-content/uploads/2014/10/06_Kurt-Klaus_Portrait_IWC-Schaffhausen-Headquarter.jpg)
Kurt Klaus, the inventor of the ingenious autonomous IWC perpetual calendar mechanism turned 80. – Watch-Insider.com
![IWC Schaffhausen IW376207 Da Vinci Perpetual Calendar Edition Kurt Klaus Silver Plated Index Stainless Steel Black Leather 43.1 x 51 mm Automatic IWC Schaffhausen IW376207 Da Vinci Perpetual Calendar Edition Kurt Klaus Silver Plated Index Stainless Steel Black Leather 43.1 x 51 mm Automatic](https://www.jaztime.com/media/catalog/product/cache/1/image/1000x1231/17f82f742ffe127f42dca9de82fb58b1/i/w/iw376207.jpg)
IWC Schaffhausen IW376207 Da Vinci Perpetual Calendar Edition Kurt Klaus Silver Plated Index Stainless Steel Black Leather 43.1 x 51 mm Automatic
![IWC Da Vinci Kurt Klaus Edition Perpetual Calendar Chronograph... for $20,800 for sale from a Private Seller on Chrono24 IWC Da Vinci Kurt Klaus Edition Perpetual Calendar Chronograph... for $20,800 for sale from a Private Seller on Chrono24](https://cdn2.chrono24.com/images/uhren/25416582-n5ejj1nsdc3ekkbchb86uu0p-ExtraLarge.jpg)