Patek Philippe Calatrava Ref. 3440: The Structural Automatic of the 1960s

The Patek Philippe Reference 3440, introduced in the early 1960s, represents a key moment in the evolution of the Calatrava line, uniting classic elegance with modern functionality. This example in 18k Yellow Gold features a compact case with a diameter of approximately 34 mm and a structured design. The Reference 3440 is particularly known for its screw-down caseback: a significant technical innovation that provided increased water resistance and made it a surprisingly robust dress watch for daily use. The silvered/champagne dial showcases a clean and functional composition, with applied gold baton markers and the subsidiary seconds register at 6 o'clock. The crown, signed with the "PP" logo, is a further seal of Patek Philippe authenticity and quality. At its heart beats the famous automatic Calibre 27-460 movement. This high-quality haute horlogerie calibre is renowned for using the 18k gold semi-circular rotor and the Gyromax balance, elements that contribute to the thin profile and precision. Notes for the Collector Mechanical Excellence: The Calibre 27-460 is considered one of Patek Philippe’s best time-only automatic movements. Rare Design: The screw-down caseback construction makes it a robust "Utilitarian Calatrava". The case is often the work of the casemaker Antoine Gerlach. Collecting Value: It is often considered one of the most undervalued vintage automatic Calatravas, sought after for its integrity and unpolished case. About Us Acquiring a watch of this calibre demands trust and absolute transparency. Our mission is to curate a selection of high-end vintage and contemporary watchmaking with the utmost rigor. Every piece we offer undergoes a thorough technical and historical verification by our experts. We guarantee the authenticity, component consistency, and integrity of the model, ensuring that every watch has the necessary documentation to tell its complete story. We are here to serve the collector's passion, offering only pieces of proven value and provenance.