Examination of this disputed essay and its origins using modern instrumental analysis methodology
by Dr. Udo Gross
The forgeries of Fiume / Rijeka. +250 high resolution images, side-by-side comparison of genuine vs. forged stamps.
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The forgeries of Tibet. +140 high resolution images, side-by-side comparison of genuine vs. forged stamps.
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The forgeries of Liberia. +210 high resolution images, side-by-side comparison of genuine vs. forged stamps.
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