Patek Philippe 3971 Perpetual Calendar Chronograph Rose Gold "TIFFANY & CO" UNIQUE

Patek Philippe 3971/E Perpetual Calendar Chronograph retailed by Tiffany & Co, 3971E, 3971, a possibly unique example of a 3971 with a retailer stamp Tiffany & Co, transitional model introduced prior to all 3970 being issued with 2 casebacks, "E" stands for "Etanche" (referring to the waterproof screw-down back), the 3971 was introduced as a unique reference as the demand for display backs grew in the early 1990s, the 3971 was only supplied with a display back, this is the only Tiffany & Co stamped Patek Philippe 3971 to have surfaced on the market, 18K rose gold case on a strap with a rose gold tang buckle, the 18k rose gold case appears to be in completely original condition with hallmarks and lines all looking like the watch just left the factory floor, extremely crisp and sharp, iconic 1st / 2nd series dial with rose gold applied baton indexes and gold leaf hands, chronograph, perpetual calendar (day, date, month, leap year, moon phases), manual wind Caliber CH27-70Q, 24-hour indicator, screw down sapphire crystal display back, water resistant to 25 meters, size: 36mm, thickness: 12.9mm. Excellent condition with original box and extract from the Patek Phillipe showing an original date of sale in June of 1989.