A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar 720.025

A. Lange & Sohne Lange 1 Tourbillon Perpetual Calendar 720.025

Stock : W15265 Brand : A. Lange & Sohne Series : Lange 1 Series : Specials Model : 720.025 Special : Great Price New Arrival : JUST IN Retail Price : 357,200.00 Special Price : 249,500.00 Condition: Excellent Gender: Men’s Dial Color: Silver Case: Platinum 42mm Strap: Crocodile Leather Bezel: Platinum Crystal: Scratch Resistant Sapphire Movement: Automatic Water Resistant: 30 meters / 100 feet Box: Yes Papers: Yes Certificate of Authenticity: Yes Warranty: Yes Additional Information: Collectors watch A. Lange & Sohne Lange 1 gent's watch, Model # 720.025. Limited Edition of only 100 pieces produced. Platinum 41.9mm case with platinum crown. Platinum bezel. Silver colored dial with offset hours and minutes with Roman numeral and index hour markers and platinum hands. Hours, minutes, small seconds, big date, day, month, leap year, perpetual calendar, power reserve indicator, moonphase and tourbillon. Large date window located at the 10 o'clock position. Automatic chronometer movement, Caliber L0821.1. Crocodile leather strap with platinum deploy buckle. Power reserve up to 50 hours. Water resistant up to 30m / 100ft. This watch is in mint condition and comes to you with original box and papers. Perpetual Calendar- A complication showing the day, date, month and leap year cycle at the minimum. The watch will correctly adjust for short and long months as well as 29 days of February once every 4 years. 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 six minute tourbillons are also found. The Tourbillon complication is an extremely difficult accomplishment to achieve and generally demands a high premium. Also known as: Lange and Son, tourb, 720-025, 720/025, 720025, 720.0, 720.02 Subject to Availability