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<p>[QUOTE=&quot;Sunbird, post: 8286158, member: 116324&quot;]That&#039;s fascinating, thanks. It&#039;s interesting that the design features, like the text (letter E in this case), are almost as high as the rim. This makes it more surprising and unintuitive for me, since it means that the fields must each be <i>more than 10.5% deep</i> (out of max thickness). A 21% volume hit means 10.5% per side. But with the design features rising up to near-rim thickness, then the baseline must be <i>lower</i>. To get an average reduction of 10.5% per side might mean an 18% field depth or something, which I just don&#039;t see with my Mark 1 Eyeball. It&#039;s quite surprising. (Pennies don&#039;t have reeded edges, so all volume loss has to be in the fields.)[/QUOTE]</p><p><br /></p>

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