A highlight of our #SothebysGeneva sale, the reference 3970 by Patek Philippe represents the manufacturer’s third serially produced perpetual calendar chronograph. Introduced in 1986, it notably debuted both a leap year indication and a 24-hour display for the first time. Powered by the calibre CH 27-70Q, it combines technical sophistication with refined proportions. Presented in a platinum case with curved lugs, the timepiece features a silvered dial and is accompanied by an additional black dial with diamond-set indexes. Bid now via the link in bio. Sotheby's Geneva Important Watches Auction 10 May 11:00 CEST Lot 39