Patek Philippe 3940R

Patek Philippe Perpetual Calendar Reference 3940R The reference 3940R represents Patek Philippe's 36mm rose gold perpetual calendar offering within the brand's complicated watch collection. This reference features a moon phase complication alongside the perpetual calendar function, positioning it as a multi-complication timepiece in the manufacturer's lineup. Production spanned from 1985 to 2006. The 36mm case is crafted from 18k rose gold with a polished bezel and sapphire crystal. The watch is powered by the automatic caliber 240 Q movement, providing 48 hours of power reserve. Water resistance is rated to 25 meters, and the timepiece is fitted with a leather strap. This reference appeals to collectors seeking a precious metal perpetual calendar in a compact case size. The rose gold construction and extended 21-year production period make it a substantial entry within Patek Philippe's complicated watch offerings. The 36mm diameter provides a more restrained profile compared to contemporary perpetual calendar sizes.