Patek Philippe Grand Complications 3940J Yellow Gold Perpetual Calendar Ivory Dial

Patek Philippe Grand Complications Ref. 3940J – Yellow Gold Perpetual Calendar, Ivory Dial & Moon Phase

The Patek Philippe Ref. 3940J is one of the most historically significant grand complications ever produced — the timepiece that defined the modern perpetual calendar wristwatch for an entire generation of collectors. Produced from 1985 to 2007, the 3940 is a foundational reference in the Patek Philippe canon, and the yellow gold ‘J’ variant in ivory white is among its most classically beautiful expressions.

The luminous ivory lacquered dial carries large Arabic numerals in warm gold, a layout of generous readability that belies the extraordinary mechanical complexity within. Two subsidiary dials at nine and three o’clock display day of week with 24-hour indication and retrograde date respectively, while a generous moon phase aperture at six o’clock frames a dramatic day/night arc below. Yellow gold sword-shaped hands sweep the cream surface with unhurried elegance. The Cal. 3150 automatic movement — visible through the sapphire caseback with its gold Calatrava-engraved rotor — is a benchmark of finishing and reliability. A rich dark brown alligator strap completes the composition with vintage warmth.

• Reference: 3940J
• Case Material: 18K Yellow Gold
• Dial: Ivory White with Arabic Numerals & Gold Hands
• Complications: Perpetual Calendar (Day/24H, Date, Month), Moon Phase
• Case Size: 39mm
• Movement: Automatic Mechanical (Cal. 3150)
• Strap: Dark Brown Alligator Leather
• Production: 1985–2007 (Discontinued)
• Origin: Geneva, Switzerland

A legend of grand complication watchmaking — the 3940J in ivory yellow gold is the perpetual calendar every serious collector aspires to hold. A true heirloom of horological history. Presented with full quality assurance.