Buy, Sell, or Trade your watch here: http://www.thewatchbox.com Tim Mosso and Mike Michaels discuss the IWC Pellaton automatic winding system. Envisioned by IWC watchmaker Albert Pellaton in the late 1940s and serialized in the early 1950s, the Pellaton winding system was a late arrival to the automatic watch scene. However, the innovative combination of cams and pawl-wheel drive made the Pellaton system both original and efficient. The system remains in use at IWC to this day. Its combination of bi-directional winding and a shock-protected winding wheel ensures smooth and durable operation. Tim demonstrates the IWC Pellaton system using a series of graphics and a physical example of an IWC caliber 89361 with a modern four-pawl upgrade on the traditional two-pawl Pellaton winding gear. The rotor actuates two cams in sequence; these cams drive pawls that hook and draw a pawl wheel connected by reduction gears to the mainspring barrel. Video and content by Tim Mosso and Pheline Jerome.