Gold Repeating Watch no. 15581

Case: Yellow gold, hunting, cover winding Dial: Double dial, the first white enamel, Roman numerals, aperture for moon phase, subsidiary seconds dial, the second indicating day {in French] & date, white enamel with central aperture to display movement, gold spade hands, unsigned. Movement: Cover winding, nickel, bi-metallic balance with blued steel balance spring with Breguet overcoil with polished steel kidney piece. Provenance: 18?? - Haas Neveux, Geneva ???? - Dr Crott auction Lot No. 412 estimate 6,000 - 12,000 € "An intricate and rare minute repeating hunting case pocket watch with cover wind mechanism and full calendar Case: 18k gold, glazed on both sides, tiered, à goutte. Dial: Front side: enamel, radial Roman numerals, auxiliary seconds at "9", moon phase at "3", spade hands. Back side: outer enamel chapter ring with day and date indicator, eccentric dial for month indicator, filigree gold hands. Movm.: bridge movement, rhodium-plated, "fausses côtes" decoration, 2 hammers, 2 gongs, wolfteeth winding wheels, screw compensation balance, blued balance spring, counterpoised lever. Benjamin Haas English patent No. 3945 of December 2, 1873 was granted to Benjamin Haas for the development of a novel and unusual winding mechanism, which used the energy that is generated when the front cover of the watch is closed. Haas improved the original idea further and his watch possesses a well-developed system with a 36-hour power reserve (generated by twelve closings). Haas changed the going train by adding an additional wheel so that a single closing was able to achieve three hours' winding. He also invented a safety device which disengaged the mechanism when fully wound and thus prevented any damage to the cover. #34211"