Vintage 18k Yellow Gold Patek Philippe Calatrava Wristwatch, Ref. 3919 J-001 – Timeless elegance defines this 33mm Patek Philippe Calatrava wristwatch, featuring an 18k yellow gold case, classic white dial, and hobnail bezel. Powered by a manual wind movement, it comes with a new Patek Philippe alligator band and 18k gold pin buckle. Circa 1985-1990, this iconic timepiece showcases Patek Philippe's masterful craftsmanship. Reference #3919 J-001. Appraised Value, $18,000.00.