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Copper error cent, 2.5 Memorial cent.
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<p>[QUOTE="Cliff Reuter, post: 8267604, member: 115140"]What is the diameter of the coin? (Maybe I missed that info.)</p><p>In your side-by-side comparison image, which is the coin in question?</p><p><br /></p><p>Points raised by many are legitimate:</p><p>-A copper coin sandblasted might produce a similar result. (And produce little to no damage to the reverse). But a copper-plated zinc cent would have the zinc core exposed after this much sandblasting.</p><p><br /></p><p>-Pounding on a coin (a "Texas Cent") will affect the diameter even if the reverse is protected by leather.</p><p><br /></p><p>-Weak rims can be an indicator of PSD or a weak strike. (With the poor definition on the reverse rim from the rim gutter.) But I have seen this same weakness on newer MS coins as well, which makes me think this is a copper-plated zinc planchet.</p><p><br /></p><p>-Struck through a capped die can produce a similar look with some devices being visible but "muffled". The peaks and valleys of the obverse do seem odd but possible, IMHO.</p><p><br /></p><p>Seems like this coin is a great candidate for an XRF test to determine the metallic content. (Please correct me if I'm missing something.)</p><p>-If the test determines this to be copper-coated zinc, then it seems like this coin is probably struck through a die cap.)</p><p>-If a copper cent, then it seems like this coin is PSD where some material has been removed.[/QUOTE]</p><p><br /></p>
[QUOTE="Cliff Reuter, post: 8267604, member: 115140"]What is the diameter of the coin? (Maybe I missed that info.) In your side-by-side comparison image, which is the coin in question? Points raised by many are legitimate: -A copper coin sandblasted might produce a similar result. (And produce little to no damage to the reverse). But a copper-plated zinc cent would have the zinc core exposed after this much sandblasting. -Pounding on a coin (a "Texas Cent") will affect the diameter even if the reverse is protected by leather. -Weak rims can be an indicator of PSD or a weak strike. (With the poor definition on the reverse rim from the rim gutter.) But I have seen this same weakness on newer MS coins as well, which makes me think this is a copper-plated zinc planchet. -Struck through a capped die can produce a similar look with some devices being visible but "muffled". The peaks and valleys of the obverse do seem odd but possible, IMHO. Seems like this coin is a great candidate for an XRF test to determine the metallic content. (Please correct me if I'm missing something.) -If the test determines this to be copper-coated zinc, then it seems like this coin is probably struck through a die cap.) -If a copper cent, then it seems like this coin is PSD where some material has been removed.[/QUOTE]
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Copper error cent, 2.5 Memorial cent.
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