Patek Philippe Complications 3940P

The Patek Philippe Perpetual Calendar reference 3940P represents the platinum variant within the 3940 series, distinguished by its white dial configuration. This reference was produced from 1985 to 2006, offering collectors a precious metal interpretation of Patek Philippe's perpetual calendar complication in a 36mm case format. The 3940P features a 36mm platinum case fitted with a smooth bezel and sapphire crystal. The automatic caliber 240 Q movement provides 48 hours of power reserve, while the white dial creates contrast against the platinum case material. Water resistance is rated to 25 meters, and the watch is completed with a leather strap. This reference appeals to collectors seeking a precious metal perpetual calendar in the more compact 36mm case size. The platinum case material and white dial combination offers a specific aesthetic within the 3940 series production run. The two-decade production period from 1985 to 2006 provides multiple vintage options for collectors focused on Patek Philippe's perpetual calendar offerings.