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<p>[QUOTE=&quot;physics-fan3.14, post: 3274248, member: 19165&quot;]That is struck through grease, not an adjustment strike. On the topic of adjustment strikes, [USER=1859]@mikediamond[/USER] wrote a very interesting piece arguing that most of the so-called adjustment strikes are not actually. See here: <a href="https://www.coinworld.com/news/us-coins/2011/05/die-adjustment-strike-remains-a-persistent-pe.all.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.coinworld.com/news/us-coins/2011/05/die-adjustment-strike-remains-a-persistent-pe.all.html" rel="nofollow">https://www.coinworld.com/news/us-coins/2011/05/die-adjustment-strike-remains-a-persistent-pe.all.html</a></p><p><br /></p><p>To tell the difference, take a look at NGC&#039;s page on the subject: <a href="https://www.ngccoin.com/news/article/1115/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.ngccoin.com/news/article/1115/" rel="nofollow">https://www.ngccoin.com/news/article/1115/</a></p><p><br /></p><p>What you would expect from a die adjustment strike, or from one of the errors Mike describes, is that the high points would be weakest. The pressure is not set properly, and so the high points (which are the lowest points of the die), will not have the pressure to fully strike up the coin. </p><p><br /></p><p>What you see are that the fields and lettering around the rim are the parts missing detail, and the centers are fully struck. The fields and rim are the highest parts of the die. Grease on the die is going to produce an effect like that.[/QUOTE]</p><p><br /></p>

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