Gold Chronometer no. Unknown

Case: Gold, hunting, front cover with "JR" monogram, rear cover with engraving, hinged cuvette signed "MI Chronometre, Remontoir Perpetuel, Maison B. Haas Jeune, Brevetee, Geneve-Paris" Dial: White enamel, Roman numerals, subsidiary seconds dial, gold spade hands, red outer five minute numerals, unsigned. Movement: Nickel, bi-metallic balance with blued steel balance spring with Breguet overcoil with polished steel kidney piece, counterpoised lever, endstones on pallet pivots, winding by the cover, stamped with the Geneva seal, unsigned. Provenance: 19?? - Haas Neveux, Geneve 2020 - Bonhams, 3 Dec 2020, sold $2,805, "B. HAAS JEUNE, GENEVA. A RARE 18K GOLD HUNTER CASED KEYLESS LEVER WATCH WITH PATENT COVER WINDING "Remontoire Perpetuel", 1880's Movement: Nickel bridge pattern jeweled to the center, counterpoised escapement, bi metallic balance, overcoiled spring, lever set, wound by opening and closing the front lid of the case Dial: White enamel, minute ring enclosing roman chapters, subsidiary seconds, gold hands Case: Polished, with monogram on each lid, elaborately signed cuvette Size: 53mm Footnotes In 1848 the brothers Léopold Haas (1827-1915) and Benjamin Haas (1828-1925), founded the ANCIENNE MANUFACTURE DES MONTRES HAAS & CIE in Geneva, later becoming "Ancienne Maison B. Haas Jeune", then in 1884, "Haas Neveux & Co." to communicate that new family members had taken positions in the company. In 1873 Benjamin Haas patented a winding mechanism (English patent No. 3945 of Dec. 2, 1873). The idea was to use the energy generated by closing the front cover to wind the watch. The initial idea was improved upon; his watch features a well developed system with a 36-hour power reserve generated by 12 closings. To achieve this, Haas changed the going train, adding a wheel, which allowed him three hours' winding by a single closing. He designed a safety device disengaging the mechanism when fully wound, which prevents damage to the cover."