Previously owned Cartier Tortue Collection Privee Cartier Paris Extra Large, Model # W1548151. Limited Edition of only 30 pieces ever produced. 18kt rose gold 34mm

　　43mm case. Silver colored Guilloche dial with black Roman numeral hour markers. Hours, minutes, seconds, open tourbillon display and chronograph. 18k rose gold bezel. 18k rose gold octagonal crown set with a sapphire. Manual wind movement, Caliber 9431 MC with 40 jewels. Crocodile leather strap with 18k rose gold deploy buckle. Water resistant up to 30 meters. Monopulsante

　　a complete stopwatch function operated by one push button located in the center of the crown. This pusher starts, stops and resets the stop-watch. 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 and 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 6 minute Tourbillons are also found. The Tourbillon complication is an extremely difficult accomplishment to achieve and generally demands a high premium. 100% original and in great condition.

　　subject to availability<