With thanks to CFDL for pointing the way to this article... Download: http://www.maajournal.com/Mondio_9.2.pdf
This article may be of interest to those seriously pursuing fakes
:Ancient Coins and their Modern Fakes: an Attempt of Physico-Chemical Unmasking.
A.M. Mezzasalma, G. Mondio, T. Serafino In Mediterranean Archaeology and Archaeometry, Vol. 9, No. 2, pp. 15‐28
As a consequence of police operations, a huge quantity of perfect imitations of ancient coins
, realized by a sicilian forger, has been recently found. Such fakes
have been realized by the lost wax casting technique and reproduce coins issued by different authorities in different historical epochs. In order to overcome the obvious subjectivity of the traditional (autoptical) numismatic analysis, which sometime provides contrasting interpretations, the fakes
have been analysed by Scanning Electron Microscopy (SEM) and Energy Dispersed X Ray Fluorescence (EDXRF). The results obtained have given information on the microstructure, the homogeneity and the elemental composition of the alloys used by the forger. Furthermore, evident traces of the chemical treatment utilized for the artificial ageing of the coins have been found. Due to the presumable and dangerous large diffusion of these sicilian fakes
in the international market, the results of such analyses may certainly be of noticeable interest for Numismatics
and forensic applications as well, representing a set of proofs to be used in the unmasking of analogous counterfeiting cases.
Keywords: Scanning Electron Microscopy (SEM); Energy Dispersed X-Ray Fluorescence (EDXRF); Coin Fakes