Swiss watch with thermometer for Recordon Circa 1820

Rose gold open faced cylinder watch by Jacques-Frédéric Houriet
–
A Swiss rose gold open faced pocket watch with thermometer made for Recordon, circa 1820. Ruby cylinder escapement, bridge calibre, temperature compensation curb. Signed gold cuvette.
Engine turned silvered dial, satin finished chapter ring, Roman numerals, subsidiary seconds, fan-form sector for thermometer and blued steel moon hands. Engine turned case. Cuvette signed Recordon, Paris.
–
Diameter: 53 mm
–
Signed: Recordon Paris
–
Literature: Sabrier, Jean-Claude, Frédéric Houriet, The Father of Swiss Chronometry (2006).