Patek Philippe Perpetual Calendar 3940J

Patek Philippe Ref. 3940 J, self-winding, bissextile perpetual calendar, moon phases, AM-PM; 18K yellow gold | Important Modern & Vintage Timepieces | Monaco, July 21, 2021

Patek PhilippeRef. 3940 J, self-winding, bissextile perpetual calendar, moon phases, AM-PM; 18K yellow gold, Very fine and very rare, 18K yellow gold, self-winding, tonneau-shaped, gentleman’s wristwatch, sapphire-crystal screwed case-back, silver colour dial, with perpetual calendar (date, day, month), leap-year, moon phases, AM-PM indication.