The Calatrava is Patek Philippe's longest-running model. Between 2006 and 2018, the Calatrava reference 5296 in white gold and pink gold was produced. It bears the Patek Philippe seal, which replaced the Geneva seal on this watch's delicate movement in 2009. The Patek Philippe seal stands for the high quality and reliability of the watch as it has strict standards with rigorous testing procedures that leave no room for compromises. The Patek Philippe Calatrava 5296G010 self-winding automatic watch, features a 38mm 18k white gold case surrounding a silver opaline dial, on a black alligator strap with an 18k white gold tang buckle. Functions include hours, minutes, seconds, and date.