A French mahogany two-day marine chronometer

JACOB ET SCHARF NO 313; CIRCA 1860

細節

A French mahogany two-day marine chronometer
Jacob et Scharf No 313; Circa 1860
The frosted silvered dial signed Jacob et Scharf A St Nicolas and numbered 313, Roman hour numerals, blued steel Breguet hour and minute hands, subsidary seconds dial (at VI) and sector up-and-down dial (at X) both with blued steel hands, reversed fusee, Earnshaw escapement, cut bimetallic balance with cylindrical heat compensation weights, blued steel helical balance spring, flat strip detent (repairs) with jewelled locking stone to side of banking block, brass bowl and gimbal with sliding bolt action locking arm, three-tier mahogany box, the top lid with brass corners, the middle section with inset bone ivory disc inscribed Jacob & Scharf 313, the bottom with plinth base and push-in locking assembly, external brass drop handles; The movement and bowl are numbered 313
(lacking winding key)
75 mm. diam., 187mm. sq. box

拍品專文

Jean Aimé Jacob, 1793-1871, set up his workshop at at St. Nicolas D'Aliernont near Dieppe and was formerly a pupil in the Breguet worshops. He was one of the many highly skilled horologists that resided in St. Nicholas, a region famous for producing huge numbers of carriage clock blanc roulants which was revolutionised by the brilliant clockmaker Honoré Pons who introduced modern mechanisation and a total re-organisation of the area.
Scharf was a pupil of Victor Gannery d.1851 (also from St. Nicholas) who was himself pupil to Perrelet and then Winnerl. Their partnership is unrecorded in Tardy