L\'ART DE L\'HORLOGERIE EN FRANCE DE ...
Geneva, Hotel Des Bergues, Nov 14, 1993
Breguet No. 4861, Horloge Marine à deux barillets, petit modèle, vendue à S.M. Louis Philippe on 31 October 1839 for 2260 Francs. Rare and unusual "Marine" chronometer of Royal provenance with double gimbals.
C. Double body with visible mortice and tenon joints, a massive brass swan-neck handle with lion paw brackets on the top of the box. Double brass gimbals, the outer with conventional locking, the inner locking lever now lacking. D. Frosted and silvered with small eccentric Roman chapter for hours with outer Arabic minute ring, symmetrical subsidiary seconds below. Blued-steel "spade" hands. M. Brass half plate, spotted finished with two barrels separately wound, the springs signed Vincent and dated 1829, navette-shaped detachable platform escapement with spring detent escapement, bimetallic two-arm balance with poising and timing screws, free-sprung polished helical balance spring with adjustable stud. Signed and numbered on the dial. In very good condition. Dial diam. 90 mm.