Patek Philippe 3940 Perpetual Calendar 18K Yellow Gold Silver Dial FIRST SERIES

Introduced in 1985 and entering production by 1986, the Patek Philippe 3940 First Series in 18K yellow gold with a silver dial represents a watershed moment in the maison’s modern perpetual calendar lineage. Powered by the ultra‑thin automatic caliber 240 Q with a 22K gold microrotor, this reference achieves remarkable elegance at just 8 mm thick and 36 mm in diameter. The First Series is distinguished by its sharply recessed sub‑dials at 3 and 9 o’clock, a low‑positioned sigma signature, and hallmarks stamped on the case side—features that ceased in later iterations. With production limited to approximately 1,300 pieces and initial examples tied to Beyer’s 225th anniversary, this variant is among the rarest and most coveted by seasoned collectors. The silver dial, applied baton indices, and classic dauphine hands evoke restrained luxury, while the micro‑rotor movement underscores Patek’s technical refinement. As a first‑generation example, this watch carries both historical significance and technical merit, making it a cornerstone for any serious Patek Philippe perpetual calendar collection. Like New with Patek Philippe box, setting pin, and papers dated 1987.