IWC's Da Vinci Perpetual Calendar watch, the IW9252-06, boasts a sleek White Gold case and a crisp White dial. This innovative design was first introduced in 1985 with the Da Vinci reference 3570, making it a game-changing novelty in the industry. It has since been featured in various IWC collections, including the Novecento, GST, Pilot’s Chronograph, and even adapted by JLC for their Master Ultra Thin Perpetual model. The watch's 39 * 14.3mm case is available in different metals and dial colors, with multilingual markings. Models also offered options for plexi glass or sapphire crystal, and there were even ceramic and gem-set options