Marine chronometer signed Leroy number 307

Two-day marine chronometer signed « LEROY n° 307 ».

Three-body, with brass handles, the glazed upper section with hinged lid.

Brass bowl and gimbaled suspension with weight balance inside and Bréguet type blocking system. Silvered with radial Roman numerals, outer minute ring, subsidiary seconds and up-and-down sector of 160° for 0/49 hours. Gold hands. Ratchet wrench. Gilt brass full plate with conical pillars secured by polished steel screws, 11 jewels, fusee with chain and Harrison’s maintaining power, Earnshaw’s spring detent escapement, two-arm cut bimetallic compensation balance with cylindrical weights and two mean time adjusting nuts, free-sprung blued steel helical balance spring with terminal curves, diamond endstone.

Ivory plate on box « 307 LEROY ».

Datation : according to Leroy archives, the n° 235 is recorded to have been sold to the French State in 1863. Based on the fact that Leroy was producing around a hundred a year, our n°307 has then presumably be produced in 1864/1865.

Revision : It bears a sticker dated May 1982 by Paul Rudolf well renown as appointed « Horloger de la Marine » (dead in 1995).

Condition: Very good condition with pictures of mechanism.

Dimensions of the box : height 17,2cm x width 17,5 cm x lenght 17,5 cm

Paris 1864/1865.

Price and additional photos on request.

 

Marine chronometer signed Leroy number 307.

Marine chronometer signed Leroy number 307.

Marine chronometer signed Leroy number 307.

Marine chronometer signed Leroy number 307.

Marine chronometer signed Leroy number 307.

Marine chronometer signed Leroy number 307.

Marine chronometer signed Leroy number 307.