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<p>[QUOTE=&quot;gsalexan, post: 20196618, member: 24274&quot;]Nope! It&#039;s called a medallion engraving -- a clever way that banknote companies used to mimic a 3-D seal. These were created using what&#039;s called a ruling machine, which dragged something like a fine-tooth comb over an object. The machine converted the ridges into an engraving very similar to a topographic map. It tricks the eye into seeing it as dimensional. </p><p><br /></p><p>[ATTACH=full]1540312[/ATTACH] </p><p><br /></p><p>This process used to be used quite often on obsolete banknotes, as it was very difficult to counterfeit. If you look closely, I bet you find many examples.</p><p><br /></p><p>[ATTACH=full]1540313[/ATTACH][/QUOTE]</p><p><br /></p>

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