Bergeon.
Tools and furnishings for the watchmaking industry. 2 in 3 catalogues. Le Locle 1978. 4°. With numerous illustrations. Obrosch. Extensive product overview of the Swiss company founded in 1791. - 1-a and 1-b: Tools for watch factories, watch repair workshops, precision mechanics, optics, goldsmiths, watchmaking consumables, industrial supplies. - 2: Furnishings for watch factories, watch repair workshops and goldsmiths, watch straps and watch cases.