Ancient silver coins (drachms) issued by the Greek city Dyrrhachium during
68-43 years BC were analysed non-destructively by micro-PIXE method. The se
lected 27 drachms. including four imitations, belong to the numismatic coll
ection of the Hungarian National Museum (HNM). Nine elements (Fe, Cu, Zn, B
r, Ag, Sn, Au, Pb and Bi) were determined quantitatively. Samples are chara
cterised with a uniformly low similar to 92% Ag concentration. Debasement i
s supposed. (C) 2000 Elsevier Science B.V. All rights reserved.