


A compendium of horological and maritime history
Through its design and its COSC-certified movement with tourbillon and constant force, the 1785 edition of the Chronomètre FB 1R is inspired by Ferdinand Berthoud's Marine Chronometer No. 7. Integrated within a pillar-type architecture, the fusee and the barrel of the transmission system are suspended. The 280 mm long chain connecting them supports a tension of three kilos exerted once winding is complete. The result of complex scientific calculations, the power reserve consists of a unique mobile cone connected to flat levers on the dial side and reflects the main spring's various states of winding and unwinding with unparalleled precision. This exceptional timepiece is offered in a numbered five-piece limited edition, carved in bronze, each with a different patina to evoke the passage of time.