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<p>[QUOTE=&quot;John Anthony, post: 1622729, member: 42773&quot;]My aim behind the question was to understand exactly why coins in the same grade can appear so different from one decade to another, and even from one year to another. I didn&#039;t mean to instigate World War Three.</p><p><br /></p><p>But in fact, my question has been substantially answered. Regardless of the exact mechanics of annealing, I now understand that chatter on the planchet exists before the strike, and a strong strike removes that chatter, whereas a weak strike can leave quite a bit of it on the fields, particularly at the rim. I had earlier supposed that the chatter was caused by the strike itself, by some complicated physics of metal flow.</p><p><br /></p><p>A coin with that kind of chatter isn&#039;t necessarily &quot;cruddy&quot; - I&#039;ve collected some of the early Kennedy ni-cu clad business strikes, and the higher-grade coins have beautiful luster, very few hits, and occasionally gorgeous toning. One just has to accept the chatter at the rims as intrinsic to the issues, and not as something that detracts from the grade.[/QUOTE]</p><p><br /></p>

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