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<p>[QUOTE=&quot;Insider, post: 8184160, member: 24314&quot;]Probably not.&nbsp; My 7x does not detect it much of the time.</p><p><br /></p><p><br /></p><p><br /></p><p>Yes and no.&nbsp; Depends on the quality of the alteration.&nbsp; In the 1950&#039;s and 1960&#039;s I heard that whizzing was a major problem in the market.&nbsp; It was still around in the early 1970&#039;s when I first learned about it as a clerk at the ANA&#039;s Authentication Service in DC.&nbsp; At this time, the ANA&#039;s definition of whizzing INCLUDED CHEMICAL CLEANING <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie12" alt="o_O" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie46" alt=":facepalm:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie98" alt=":wacky:" unselectable="on" unselectable="on" />!&nbsp; Surface alterations occur in degrees and after examining coins under a microscope that were actually whizzed as we know it today, we decided that what separated whizzing from any other sort of alteration done with a wheel was the presence of a tiny, upturned ridge at one side of the relief.&nbsp; As the point of the spear, we were able to determine/modify/change much of the crap that went before we started to closely examine coins with a stereo Microscope and florescent light (as used by Mint technicians at the Treasury Dept).&nbsp; Whizzing ceased to be a problem; however, in the 1980&#039;s copper Lincoln and Indian cents appeared with an altered surface we named &quot;micro whizzing.&quot;&nbsp; These coins looked great and were deceptive enough to flood the marked and get into the slabs of both major TPGS&#039;s!&nbsp; Don&#039;t worry, after a while the graders got informed and &quot;micro whizzing&quot; rarely gets past any TPGS.&nbsp; Unfortunately, there is no way for me to post a useful image but just as an informed collector can detect a whizzed coin from a foot away, micro whizzed coins do not look original when you learn what they look like.&nbsp; &nbsp; </p><p><br /></p><p><br /></p><p><br /></p><p>I agree unless a person is an experienced, knowledgeable, dealer or collector.&nbsp; I don&#039;t buy slabs UNLESS I want the coin in a teaching set.&nbsp; Unfortunately, over the decades, &quot;gradeflation&quot; created a problem. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie3" alt=":(" unselectable="on" unselectable="on" /> Many of the Proof coins I bought in the 1980&#039;s for my Grading Set that reside in PCGS/NGC PR-64 and PR-65 slabs are now grade as high as PR-67!&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie57" alt=":jawdrop:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie46" alt=":facepalm:" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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