The IWC Da Vinci Perpetual Calendar IW3750-14 boasts a sleek Stainless Steel case and a classic White dial. This groundbreaking timepiece made its debut in 1985, revolutionizing the industry with its perpetual calendar mechanism. It quickly became a fan favorite, appearing in not only the Da Vinci collection but also in other IWC watches like the Novecento, GST, and Pilot's Chronograph, as well as models from JLC. The watch comes in a 39 * 14.3mm case with hinged lugs and was offered in different metals and dial colors. The default option was plexiglass, but a sapphire crystal could be requested. In 1987, a ceramic case option