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<p>[QUOTE=&quot;-jeffB, post: 1125075, member: 27832&quot;]Wow, I thought I&#039;d be doing a <i>little</i> better at getting new material posted here... <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie3" alt=":(" unselectable="on" unselectable="on" /></p><p><br /></p><p>I wanted to do a quick snapshot addressing the &quot;height of a stack&quot; question. People have observed that you can fit more (say) worn Walking Liberty halves than Kennedy halves into a coin tube. How much &quot;thinner&quot; do coins get as they wear?</p><p><br /></p><p>Here&#039;s a comparison between a stack of nice 1963-1964 quarters, a stack of well-worn Washington quarters (mostly from the 40&#039;s, a couple of AGs, most G-VG, and a few F), and a stack of well-worn to dateless SLQ&#039;s (the kind that make it into junk silver lots). Each stack contains 20 coins.</p><p><br /></p><p>[ATTACH]113816.vB[/ATTACH]</p><p><br /></p><p>Heights: 27+ mm, 31 mm, 34mm</p><p><br /></p><p>Weights: 116.35 g, 122.12 g, 125.35 g</p><p><br /></p><p>So, yes, those stacks <i>do</i> get distinctly shorter with wear. For the Washington quarters, a full roll of worn ones would be about &quot;four quarters&quot; shorter than a full roll of AU/BU. That&#039;s about 10%. The SLQ&#039;s are shorter still.</p><p><br /></p><p>But the <i>weights</i> don&#039;t decrease nearly as quickly. That 10% &quot;thinning&quot; of the Washingtons corresponds to a mere 3% loss in weight, and even those slick SLQ&#039;s, 20% &quot;shorter&quot;, are only down about 7% in weight.</p><p><br /></p><p>This isn&#039;t really surprising. Wear takes down the high points of the coin first, and those high points determine the spacing of coins in a stack. (I don&#039;t have enough well-struck examples to do a comparison of different uncirculated types, so I still don&#039;t know whether full-strike Walkers stack more or less densely than Kennedys.)</p><p><br /></p><p>I should probably do the same comparison for Mercury dimes, which get <i>really</i> slick and lose proportionally more weight with wear. I have a stack of pretty nice uncirculated Mercs now (not slab-worthy or FSB, but unworn), and quite a few BU Rosies, so I can do the between-type comparison there as well.[/QUOTE]</p><p><br /></p>

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