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<p>[QUOTE=&quot;-jeffB, post: 1366787, member: 27832&quot;]Actually, they lose &quot;thickness&quot; faster than they lose mass, because the high points wear down first.</p><p><br /></p><p>Here&#039;s a post I made (and never followed up on, sorry) where I weighed and measured stacks of quarters in various states of wear:</p><p><br /></p><p><a href="http://www.cointalk.com/t154492/#post1125075" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t154492/#post1125075">http://www.cointalk.com/t154492/#post1125075</a></p><p><br /></p><p>I really need to follow up -- I&#039;ve got some remarkably slick Barbers now that would make a good comparison point, and I need to do dimes and halves as well. (Quickly, too; I&#039;ve been preferentially selling off slicks whenever people are buying by face value. If you get the same price for all silver coins of a given denomination, might as well keep the ones with more silver, and sell the ones with less, after checking for keys of course. Gresham&#039;s Law doesn&#039;t just apply to circulation.)[/QUOTE]</p><p><br /></p>

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