IW3750-04Ref

The Da Vinci Perpetual Calendar reference IW3750-04 features a polished yellow gold case paired with a white dial. Introduced in 1985 with the reference 3570, this iconic perpetual calendar module became the industry standard, powering various IWC and JLC models. The 39mm by 14.3mm timepiece includes hinged lugs and evolved through several movement iterations, starting with the caliber 7906(0) and eventually reaching the 79261.