The Art of Horology in Geneva

Geneva, Hotel Des Bergues, Nov 13, 1999

LOT 121

B. Haas Jne & Cie, Besançon, Paris - Genève - Fournisseur Breveté de S. M. L'Empereur - No. 13005, circa 1874.Very fine and rare 18K gold hunting cased, keyless watch, Remontoire Perpétuel, English Patent No. 3945, dated December 5, 1873.

CHF 2,000 - 2,400

Sold: CHF 3,450

C. Four body, massive, "bassine et filets", fully engraved in a star-and-heart pattern, the cover centred with a small engraved monogram, the back with a small rosette. Hinged gold cuvette decorated with medals awarded at the Exhibition in Paris in 1867. D. White enamel with Roman numerals, outer Arabic minute ring and sunk subsidiary seconds. Gold paste-set hands. M. 18''', nickel plated, 18 jewels, straight line lever escapement, cut bimetallic balance, blued steel Breguet balance spring. Haaspatented winding device by opening and closing the cover.Diam. 48 mm.Accompanied by copies of the original patents.


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Grading System
Grade: AAA

Excellent
Case: 4

Fair
Movement: * 4 - 5
Dial: 4 - 6 - 01

Notes

B. Haas invented a perpetual calendar mechanism, PatentNo. 2870 from September 30, 1872 and a form of winding where the mainspring was wound by opening the front cover of a hunting cased watch. Patent 3945 from December 2, 1873. (Patent for Inventions. Abridgements of Specifications. Class 139, Watches, Clocks and Other Timekeepers, His Majesty's Stationery Office, London, 1905.).This watch was certainly produced in 1874 and therefore was one of the very first ever made, fitted with the invention of keyless winding for hunting cased watches, operated by opening and closing the cover.