Case material: Yellow gold; Charge: Automatic; Conditions: Used Presentation condition : Without documents; Model: Type XX / Type XXI Price on request Gmtbroker Reference: 3800 Near mint preowned mens Patek Philippe in solid 18k yellow gold features an original double signed(signed both Patek and Gubelin) blue dial. Comes with its Patek box as shown. Rare to find with a double signed dial.