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<p>[QUOTE=&quot;medoraman, post: 964711, member: 26302&quot;]Perfect answer. Attributions as to a catalog are always allowed as fair use of the source document. These reference books are printed for the purpose of attribution, and using their attribution system is allowed. However, mintage figures, graphical descriptions, estimated values, photos of the coins, are all copyrighted and cannot be used without their permission except in very limited instances while noting the source. </p><p><br /></p><p>Like Doug said, for your database you can use the commonly industry used KM number, and any other numbering system commonly used, but no other information from the KM publications.</p><p><br /></p><p>P.S. Doesn&#039;t KM, (or did they) cross reference Craig numbers themselves? I thought I remembered that. If they did, they would be hard put to argue against you cross referencing them.[/QUOTE]</p><p><br /></p>

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