| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1679783 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2016 | 11 Pages |
•No tri-metallic system.•Debasement of gold alloys.•Chronological chemical pattern.•Presence of Sn and Sb.•Attribution of unknown coins.
The analysis by PIXE and PAA of 64 coins struck in Iron Age Armorica by the Osismi tribe revealed the use of a different system from the usual Celtic Gaul tri-metallic system. The gold-based alloy (Au–Ag–Cu) firstly issued is debased over time to become a silver-based alloy (Ag–Cu–Sn). Based on the analytical data, two chronological phases were defined and dates of issuing could be ascribed to the coin-types. The presence of Sn and Sb in the alloys and the low contents of Pb were used in the attribution of 9 specimens of unknown origin to the Osismi monetary system. Considerations on the mints supplies could also be provided.
