Switzerland, La Chaux-de-Fonds

Circa 1820

Etienne Joseph Pequignot (chasing on the dial field), Héliodore Humbert Droz

Gold, steel, brass, glass; chasing, engraving, gilding, mechanical works, guilloché (engine-turning), polishing

On the back lid inner side: “AH 2450 K18 365”, scratched “209”, French eagle's head hallmark (assurance mark). On the outer surface of the dust cover: “Heliodore Humbert Droz”, “Echappement a Cilindre/Quatre trous en Rubis”. On the dial field: “Etienne Joseph Pequignot”. Next to the musical shut-off lever: 'M/S’

7855.1-2MCA472/ДПИ