1870s, Geneva, Switzerland
Dial: Front: white enamel dial with black Roman numerals, outer minute track with Arabic numerals every five minutes, sunken sub-seconds, blued steel spade hands; Back: white enamel with outer date track divided into 31, small subsidiary symmetric dials for days of the week and month, steel hands
Movement: 18 jewel, stem-wind and pin-set, lever-set for calendar function, nickel plated, fausses côtes decoration, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring, punched with Courvoisier coat of arms.
Case: 18K yellow gold hunter case, #4204, smooth-polished with hinged covers, glazed inner bezels, hallmarked, signed inside back: Quantimes Indépendants Chronometre System B. Haus Jne & Cie Brevetes Genève - Besançon - Paris; and front: Robert - Houdin Fils Ne. 9 Boul des Italians Paris
54mm Dia.
164 grams gross

Overall good condition. Winds, sets and runs. Dials: Both in good condition. Movement: Good condition. Case: Good condition. Even wear and abrasion commensurate with use.