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<p>[QUOTE=&quot;KBBPLL, post: 8453825, member: 104064&quot;]Yes, you would have to have a database of known counterfeit lineages including the dates they were used, i.e. the counterfeit lineage would be generic to the coin type I guess. Same with known die pairs or known types, for example the 1900+ &quot;wide shoulder gap&quot; Morgan dollar reverse being used on a pre-1900 dollar. Problems would arise for discoveries that have not bubbled up to the TPGs. For example, the 1900-1901 dime reverse type is unknown outside of BCCS journal followers, and 1899-P dimes exist with that 1900 reverse - so the system would flag all those 1899s as counterfeit. Same with previously unknown die pairs, etc. Their &quot;varieties&quot; database would have to be more comprehensive, accurate, and kept up to date.[/QUOTE]</p><p><br /></p>

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