Case material: Yellow gold; Charge: Automatic; Conditions: Never worn Year : 1960; Presentation condition : With boxes and all papers; Model: Calatrava Price on request Gmtbroker Reference: 3439 this is an excellent patek philippe, vintage automatic calatrava, ref. 3439 in 18k yellow gold. manufactured in the mid 1960s, this modell has got the 2nd automatic movement generation cal. 27-460 build in. very rare and highly collectable model! has got a solid screw down back case. iconic and elegant gentleman's patek! 12 month of bachmann & scher's warranty!