Previously owned Philippe 10 Day Power Reserve Tourbillon, Model # 5101J 18kt yellow gold 29.6mm x 51.7mm case with a crocodile leather strap and yellow gold pin buckle. Manual wind movement. Patek Philippe Caliber 28-20 (REC10 PS IRM ; 28

　　20mm, 29 jewels, 21,600 vph, Geneva Seal). Cream color dial with yellow gold applied Arabic numeral hour markers. Hours, Minutes, Subsidiary Seconds, Power Reserve, Manually wound rectangular caliber 28-20/222 chronometer movement, Tourbillon, 10 day power reserve, Power-reserve indicator, Subsidiary seconds. Tourbillon

　　compensates for differences in rate caused by a watch adopting different positions. The principle is to mount the balance and escapement in a rotating cage. The balance & escapement rotate around their common axis going through all positions to average out the errors, Tourbillon cages or platforms usually rotate once per minute but 4 minute and six minute tourbillons are also found. The Tourbillon complication is an extremely difficult accomplishment to achieve & generally demands a high premium. 100% original and in Like New condition. With Original Box and Papers.

　　subject to availability<