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2. A. Oddy, Assaying in Antiquity,Gold Bull., 1983,15, (2), 52–59
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4. J.C. Blanchet, Les Premiers Métallurgistes en Picardie et dans le Nord de la France,Mém. Soc. Préhist. Franc., 1984,17, 414
5. The examination was carried out in the Laboratoire de Minéralogie du Muséum d’Histoire Naturelle à Paris, by Dr. Latouche. The S.E.M. and X-ray fluoroescence spectrometric analyses were carried out in the Laboratoire de Recherche des Musées de France, by Dr. A.-R. Duval. I am most grateful for their help