Various Patek Philippe Flip-back Case Back 3450

Estimated price: 200,000-250000 USD
Including commission: USD 270,000 (about RMB 1,843,479)
Overall description: The case diameter is 38 mm and the thickness is 12 mm. No. 1119661, case No. 558562, model 3450, sold on September 19, 1983, self-winding, 18K yellow gold case, perpetual calendar function, moon phase display, 18K gold Patek Philippe buckle, with original box, Certificates, brochures and archives.
Movement configuration: 27-460 Q movement, with the Geneva mark, rhodium-plated, Fa u sses decoration, 37 rubies, linear lever escapement, Gyromax balance wheel with cold and hot isochronism and 5-directional correction, Suspension, self-compensating Breguet balance spring, 18K gold oscillating weight, dial, case and movement are all signed.
[Comment] This is Patek Philippe’s rare 3450 with a flip-through caseback. So far, only four Patek Philippe original models of this series have appeared. These extremely rare special styles were specially created by Patek Philippe at the request of customers. The watch in the auction has never appeared on the market since it was delivered to the seller. At the same time, from the perspective of the preservation of the watch case, the watch owner has only worn or tried it a few times. For a ‘post-80s’ watch, this is indeed valuable. The high price of 1.8 million yuan is second only to the ‘Bid King’ Patek Philippe 3974 (including 1.2 million US dollars) in this auction.