Microchimica Acta

, Volume 155, Issue 1–2, pp 179–182 | Cite as

EPMA Investigation of Roman Coin Silvering Techniques

  • Gunther Kraft
  • Stefan Flege
  • Fritz Reiff
  • Hugo M. Ortner
  • Wolfgang Ensinger
Original Paper

Abstract.

Ancient Roman silver coins, especially forgeries, contain various amounts of silver on the surfaces. The state of preservation of the outer layer can vary strongly among different areas of the same coin, thus an investigation of the entire surface is indispensable. The measurement of the silver distribution is a first step towards uncovering the manufacturing techniques. Element mapping by electron probe micro-analysis (EPMA) with increasing step size allows a survey of the complete coin surface. The suitability of this approach is shown and applied to coins having a dark optical appearance and unknown minting technique.

Key words: Roman coins; forgeries; EPMA; element mapping. 

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References

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Gunther Kraft
    • 1
  • Stefan Flege
    • 1
  • Fritz Reiff
    • 2
  • Hugo M. Ortner
    • 3
  • Wolfgang Ensinger
    • 1
  1. 1.Department of Chemical AnalyticsInstitute of Materials Science, Darmstadt University of TechnologyDarmstadtGermany
  2. 2.Im Rassdorf 6Seeheim-JugenheimGermany
  3. 3.Osterbichl 16BreitenwangAustria

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