Patek Philippe. A very unusual and very rare Patek Philippe reference 522 rectangular curved wristwatch in stainless steel and pink gold retailed by Casa Masson Model: Patek Philippe Rectangular Retailed by Casa Masson Material: stainless steel and rose gold Reference N°: 522 Year: 1941 Case N°: 624295 Caliber: 9'90 Movement N°: 834721 Bracelet: leather strap Dimensions: 23 mm x 44 mm Accessories: Extract from the archives