One of a kind! Consigned by an important collector, this is the only known PatekPhilippe reference 3448/17. There is no other known perpetual calendar with this type of brick link bracelet. There are a total of 13 known reference 3448s with yellow gold integral bracelets, though none of which are like the present watch. The condition of the case is nice and crisp and there are hallmarks to the case back. Further highlighting is the presence of its original Certificate of Origin and presentation box. Hong Kong Important Watches Sale Lot 2283 – Est: HK$1.8m – 2.4m/ US$231k – 308k Visit link in bio to browse the full catalogue. #SothebysWatches #SothebysHongKong #PatekPhilippe #Patekholic #PerpetualCalendar