Perpetual Calendar

Reference 5136 was launched in 2003 and remained in production until 2007. It was available in white or yellow gold and exclusively with a detachable-style gold bracelet, never with a leather strap. The model is regarded as the successor of ref. 3970, with the same 240 Q movement however a 2 mm. larger case.

The Last Family-Owned Independent Genevan Watch Manufacturer. 

Since 1839 without interruption, Patek Philippe has been perpetuating the tradition of Genevan watchmaking. As the last family-owned independent watch manufacturer in Geneva, it enjoys total creative freedom to entirely design, produce and assemble what experts agree to be the finest timepieces in the world – following the vision of its founders Antoine Norbert de Patek (1839) and Adrien Philippe (1845). The company name became Patek Philippe in 1851, and it is under this name that Patek Philippe created the first Swiss wristwatch ever made in 1868.Thanks to its exceptional know-how, Patek Philippe maintains a tradition of innovation hailed by an impressive repertoire of more than 100 patents.