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<p>[QUOTE="John Bull, post: 7699553, member: 121311"]The 3ç is incredibly crude I was amazed that coin counterfeiters were using EDM.</p><p><br /></p><p>You're right about spectrographs I'm surprised that XRF isn't regularly used. As for electron microscopes strange parts released a video on a desktop electron microscope the other day (albeit he couldn't get it to work properly at his altitude).</p><p>[MEDIA=youtube]t60I0Z7qCsU[/MEDIA]</p><p><br /></p><p>The thing which seems to be hardest to replicate in ancients is patina, I do wonder though if coins were put in a pressure chamber and certain gases added you may be able to achieve thicker patina which didn't rub off.[/QUOTE]</p><p><br /></p>
[QUOTE="John Bull, post: 7699553, member: 121311"]The 3ç is incredibly crude I was amazed that coin counterfeiters were using EDM. You're right about spectrographs I'm surprised that XRF isn't regularly used. As for electron microscopes strange parts released a video on a desktop electron microscope the other day (albeit he couldn't get it to work properly at his altitude). [MEDIA=youtube]t60I0Z7qCsU[/MEDIA] The thing which seems to be hardest to replicate in ancients is patina, I do wonder though if coins were put in a pressure chamber and certain gases added you may be able to achieve thicker patina which didn't rub off.[/QUOTE]
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