Calatrava Ref.3434J 'Amagnetic' Gold Wristwatch

In fact…

Both a tool watch and a dress watch, the Calatrava Reference 3434 is a very rare model which is unique in its overall flat silhouette with stepped case and bezel forming a Disco Volante silhouette. The 3434J is also an Amagnetic Calatrava because of the manual-winding Calibre 27 AM 400 which is based on the first Antimagnetic movement – Cal. 12-400, with an improvement to include a Gyromax balance wheel that permits the most precise and enduring regulation of  a watch ever achieved., patented by Patek Philippe In an Amagnetic watch is also parts made of non-magnetic metal, which meant gold in most instances, and a special protective cap that prevents the buildup of magnetic fields within the watch. Starting with the Reference 3417, the first Amagnetic watch was introduced in 1958.

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