Patek Philippe. An exceptional Patek Philippe reference 3418 in stainless steel with a unique dark brown aged dial Model: Calatrava Material: stainless steel Reference N°: 3418 Year: 1957 Case N°: 2605818 Caliber: 12'400 Movement N°: 727978 Bracelet: stainless steel Dimensions: 34 mm Signed: case, dial and movement