A. Lange & Sohne - Tourbograph

Platinum watch (41.2 mm diameter x 14.3 mm height) equipped with a Lange manufacture Calibre L903.0 movement, manually wound, hand assembled and decorated, plates and bridges of untreated German silver, precision-adjusted in 5 positions. 465 parts plus more than 600 chain parts, shock-proof glucydur-alloy screw balance, Nivarox 1 hairspring, 21,600 semi-oscillations per hour, 36-hour power reserve, sapphire crystal front and back, silver dial. Functions: hours, minutes, power reserve, one-minute tourbillon with fusée-and-chain transmission, chronograph with rattrapante function. Chrono push-button at 2 o’clock, reset button at 4 o’clock, rattrapante push-button at 10 o’clock, crown for winding and setting time.