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Figure 11
The counterfeit quattrino of Siena from the unofficial mint of Godano. Average value projection from tomography data, compared with fluorescence mapping data. (a) Projection of one face from the tomography data. (b) Cross section through the same dataset. (c) 2D surface map of the mercury XRF signal. (d) Cross-section XRF maps of mercury, silver and tin. The areas corresponding to the XRF maps are marked in yellow on the tomography images. In the scan made in the section of the coin we observe correlated Hg and Ag signals from the surface.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 4| July 2026| Pages 1198-1205
https://doi.org/10.1107/S1600577526005771
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