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<p>[QUOTE=&quot;Pete Apple, post: 3574648, member: 103982&quot;]I did show one in the paper I wrote. I make the point that you have emphasized that it is just not possible to say for sure but it is possible to say a certain feature is likely a Rockwell Test. It is much easier to say certain marks are NOT test marks.</p><p><br /></p><p>By the way, I also say in the paper (I tried to say it subtly in order to be sensitive) that a Test Mark certified by John Devine could not be one.</p><p><br /></p><p>My paper is here:</p><p><a href="https://conecaonline.org/rockwell-hardness-test-marks-on-lincoln-cents/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://conecaonline.org/rockwell-hardness-test-marks-on-lincoln-cents/" rel="nofollow">https://conecaonline.org/rockwell-hardness-test-marks-on-lincoln-cents/</a></p><p><br /></p><p>Since I am a total amateur, I bow to the professionals among us such as yourself![/QUOTE]</p><p><br /></p>

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