Patek Philippe Early Screw-Back Calatrava, Circa 1950

An icon of Patek Philippe, the Calatrava represents an exceptional heritage of horology and elegance that began in the 1930s and continues to the present. This Ref 2509 model was one of the defining examples of a slightly sportier, more robust Calatrava case offering. Furthermore, the 18K yellow gold case features a screw back, which provides better water resistance than its snap-on counterpart.

A 17-jewel manual-wind 12-400 movement keeps time with a 40-hour power reserve; it was designed to enhance the shock-resistant suspension of the balance wheel. The time displays on a silvered convex dial with gold faceted hour markers and dauphine hands. A subsidiary seconds register is located at the 6 o’clock position. Fully restored and accompanied by an 18-month warranty

This highly sought-after Calatrava model offers heritage, modern reliability, and timeless luxury. A true Patek classic of owners past, present, and future.

With Patek Philippe Extract from the Archives

Movement #12-400

Reference #2509

Case #693662

Circa 1950