Launched in 1985, the present reference 3750 features perpetual calendar and chronograph complications and has established itself as one of IWC's most iconic collections. The complex mechanism is extremely easy in practice and the displays for the day, date, year and moon phases can all be adjusted through the crown. Fitted in a circular case, which is one of Leonardo da Vinci's favourite geometrical figures, the present watch is perfectly balanced with four registers and two push buttons in the band. The present Da Vinci watch is a long-standing icon of the brand and is preserved in very original condition.