With Patek Philippe Certificate of Origin dated 11 December 2008, Contrôle Officiel Suisse Des Chronomètres dated 4 December 2006, leather folder, slip case, fitted presentation box, key and outer packaging.
It takes much more than a cursory glance at Patek Philippe's debut showpiece for Basel 2003 to realize that reference 5101P is a highly complicated wristwatch. In fact it is the first timepiece that combines two complications which are very difficult to accommodate in the confined space of a rectangular movement: two tandem mainspring barrels with 240 hours of energy storage capacity and a tourbillon precision regulator composed of 72 individual parts.
Characteristic for Patek Philippe, hardly any signs on the outside of the piece would reveal the complexity of its inner workings. Understated elegance has always been a hallmark of Patek Philippe but the tourbillon cage is in fact concealed for a very practical reason - the oil used to lubricate the mechanism is sensitive to ultraviolet rays and will decompose when exposed to daylight, thus losing its beneficial tribological properties. Extremely stringent standards are imposed on all Patek Philippe movements and even more so on tourbillon pieces. The reference 5101 in platinum features both the official C.O.S.C. (Contrle Office Suisse de Chronomtre) certification and the Geneva Seal.