Now discontinued and replaced by the successor reference 5270, the pictured PatekPhilippe reference 5970 #PerpetualCalendar chronograph wristwatch was available from 2004 to 2011. It was Patek Philippe’s very last perpetual calendar chronograph to be fitted with a Lemania 2310 based movement. Reference 5970 has enjoyed many variations such as different case metal and gem-setting and is very popular and collectible today. Hong Kong Important Watches Sale Lot 2110 – Est: HK$1.2m – 1.6m/ US$154k – 205k Visit link in bio to browse the full catalogue. #SothebysWatches #SothebysHongKong #PatekPhilippe #Patekholic