The Patek Philippe Perpetual Calendar (ref. 5139G-001) is a classic, unisex timepiece featuring a 38mm white gold case and a silver dial. Powered by an automatic movement, it displays a perpetual calendar complication. This pre-owned watch, in very good condition with minor signs of wear, represents Patek Philippe's dedication to high horology. While this listing indicates no original box or papers, Geneva Watch Company can procure this model. This Perpetual Calendar embodies Patek Philippe's commitment to sophisticated, complex timepieces.