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<p>[QUOTE=&quot;900fine, post: 752423, member: 6036&quot;]Interesting question. Yes, proofs are supposed to have a squared edge.</p><p>&nbsp;</p><p>I can assure you there can be much disagreement about whether or not a given 19th century coin is a proof or not; this is less rock-solid determinate than some would like (or believe). Even experts will sometimes disagree.</p><p>&nbsp;</p><p>Sometimes, proofs and business strikes were struck from the same dies. Usually (maybe &quot;always&quot;), the proofs were struck first. If so, the proofs are the earliest die states and the determining factor can be certain die state diagnostics such as die cracks.</p><p>&nbsp;</p><p>Put another way - a coin will be judged business strike if it has die clashes or die cracks at a certain advanced state. Since die cracks &quot;evolve&quot;, this too can be a judgement call.</p><p>&nbsp;</p><p>Good luck ![/QUOTE]</p><p><br /></p>

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