Franco-British Exhibition, London, 1908, a struck square graphite plaque, unsigned, for Levallois-Perret, Paris, similar, 58mm (cf. DNW 45, 883). Extremely fine £60-80

Le Carbonne, later Carbone Lorraine and still trading today as Merson, a French manufacturing company, founded 1891 in Nancy, manufactures graphite for specialized use in electrical and electronic applications