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<p>[QUOTE=&quot;imrich, post: 2142712, member: 22331&quot;]The dimensions, tolerances, weights, were provided from readily available Numismatic publications. The certified coins were supplied only to provide a visual reference for a specific date/type coin.</p><p><br /></p><p>The acquired coins were examined to determine accurate design, dimensions and weight. The coins are subsequently placed in airtite type transparent holders, which were hermetically sealed. The sealed containers were then engraved COPY, with the coin intact as struck from the press operation.</p><p><br /></p><p>The Chinese operators surely don&#039;t need guidance for replication activities, and its believed the dimensions are acquired automatically by a 3D copy pantograph machine, or other surface profiling devices. Investment casting is also a simple inexpensive process for replicating base metal plated &quot;copies&quot;.</p><p><br /></p><p>Before asking my associate to investigate/acquire coins while in the country, I had already investigated some firms and acquired analytical samples which generally had supplied data for best acquisition source.</p><p>Only a composition testing kit, mechanical or optical comparator, and beam balance were generally needed for on-site quality assurance.</p><p><br /></p><p>JMHO[/QUOTE]</p><p><br /></p>

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