Patek Philippe. An esteemed and very rare Patek Philippe reference 3541 in 18k white gold with date, integrated bracelet and papers Model: Calatrava Material: white gold Reference N°: 3541 Year: 1950 Case N°: 321023 Caliber: 27-460M Movement N°: 1126021 Bracelet: white gold Dimensions: 36 mm Signed: case, dial and movement