Patek Philippe Yellow Gold Perpetual Calendar Moon Phase

Crafted in Geneva, the Patek Philippe Grand Complications Ref. 3940J is an icon of perpetual calendar horology. The 36mm yellow gold case houses a pristine white dial with gold Arabic numerals, displaying day, date, month, and moon phase — requiring no manual correction until 2100.

Powered by the celebrated in-house self-winding caliber 3150, visible through the exhibition caseback, this movement is a hallmark of Patek Philippe's unrivaled craftsmanship. The rich dark brown alligator leather strap adds classic elegance to every occasion.

A true collector's heirloom — combining timeless aesthetics with exceptional mechanical complexity.

• Case: Yellow gold, 36mm, polished finish
• Dial: White lacquer, gold Arabic numerals, moon phase display
• Movement: Self-winding Cal. 3150, exhibition caseback
• Functions: Hours, minutes, seconds, perpetual calendar, moon phase
• Strap: Dark brown alligator leather, yellow gold folding clasp