Brand Girard Perregaux, La Chaux-de-Fonds Model - Retailed by / made for made for the North American market Year circa 1870-1880 Reference - Movement No. 78 266 Calibre 19’’’, manual-winding, probably 18 jewels Case No. 78 266 (by ‘JF N’, Jean-Frédéric Nardin, Le Locle) Material/s yellow gold (18-carat) Bracelet - Buckle - Dimensions Ø 54 mm. Thickness 18.5 mm. Weight 174.8 gr. (approx.) Signature dials, case and movement (also with the Courvoisier-Jonais hallmark) Accessories - Girard Perregaux Pocket watch, double faced, patented triple date, moon phases, made for the North American market; yellow gold (18-carat) -- Yellow gold (18-carat), double-faced hunting-case, keyless-winding, round-shaped, heavy pocket watch, with subsidiary seconds at 6 o’clock and three horological complications: · Date of the month (exterior graduation with central hand) · Day of the week (subsidiary dial at 3 o’clock; indications given in English) · Month of the year (subsidiary dial at 9 o’clock; indications given in English) · Phases of the moon (aperture at 12 o’clock) Made for the North American market. -- Case: No. 78 266 (by ‘JF N’, Jean-Frédéric Nardin, Le Locle), five-piece, ‘Bassine à gouttes et filets’, entirely engraved in taille-douce (fine cut); two gold and glass bezels; round-shaped clipped bow. Cover and case-back engraved in taille-douce (fine cut) with stylized foliage and geometric patterns, and, in the centre of the cover an escutcheon; case-band decorated en suite. Dial: white colour, enamel, with black painted radiating Roman numerals; external minute track divided five by five, with black painted radiating lines; yellow gold ‘Poire’ pear-shaped hands. Movement: unnumbered, calibre 19’’’, manual-winding, probably 18 jewels, nickel-plated, going barrel, equilibrated straight-line lever escapement, cut bimetallic compensated balance with gold poising screws, blued steel hairspring with terminal curve, polished steel index-regulator; Alfred Courvoisier-Jonais patented triple date mechanism hinged on a separate plate and operated by a gear (gold wheels) set driven by the movement’s centre wheel; the calendar jumps are activated by a pin riveted to one of the gears, which pushes a lever through an opening in the calendar dial plate. Type of winding and time setting: winding by the crown on the pendant and time-setting by a push-pin (à poussette) located on the case-band at 4 o’clock.
