The Da Vinci Perpetual Calendar IW9253-06 boasts a shiny Yellow Gold case and a sparkling Paved dial. IWC first unveiled its perpetual calendar for wristwatches in 1985 with the Da Vinci 3570 – a groundbreaking development that caused quite a stir in the industry. This innovative module became a fan favorite, appearing not only in the Da Vinci collection, but also in IWC's Novecento, GST, Pilot's Chronograph, and even in Jaeger-LeCoultre's Master Ultra Thin Perpetual. It served as the foundation for the impressive Grande Complication and the magnificent Destriero Scafusia. The Da Vinci Perpetual 3750 came in a 39 *