Patek Philippe 3940R (Pre-owned - Excellent) — USD 75,000 on eBay

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.