Collector's Pocket Watches, Wristwatc...
Noga Hilton, Geneva, Apr 12, 2003
LOT 267
Lot of 7 books of Swiss patents, published circa 1945, by Robert Berthoud, comprising:
CHF 1,000 - 1,200
EUR 700 - 830 / USD 750 - 900
Sold: CHF 1,380
1. " Calibre", 210 pages; 2. " Organe moteur", 66 pages; 3. " Mécanismes", 210 pages; 4. " Echappements", 97 pages; 5. " Boîtes", 295 pages; 6. " Montres réveil, quantième, chronographes, à sonnerie ", 235 pages; 7. " Montres fantaisie, diverses", 273 pages. The work from the personal notes of Robert Berthoud made in 1944. Each book covers all Swiss patents of its class up to the moment of the publication.
