Lever escapement watch by Breguet et Fils, 1812. Silver case, the back engine turned with an engraved crown covered with clear grey enamel in the centre. Silver chain and key attached. The cuvette is signed ‘Breguet et Fils. Regulateur à Tourbillon no. 2571’. White enamel dial with arabic hour figures and a subsidiary seconds dial. Blued steel 'Breguet' hands. Dial signed ‘Breguet’ in cursive script, with a secret signature underneath. Also ‘Breguet et Fils No. 2571’. One minute tourbillon with Breguet’s first form of lever escapement. Unsigned full plate fusee movement, with balance and tourbillon carriage outside of plates. Two arm balance with 2 bimetallic compensation strips attached to each arm. Freesprung spiral balance spring with overcoil.
This watch was bought by the Princess de Valancay in 1812 for 1600 francs. It later formed part of Sir David Salomon Bt's extensive collection of watches, and was presented by Salomons to the Worshipful Company of Clockmakers in 1924. Clockmakers' Museum No. 469.