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<p>[QUOTE=&quot;cubenewb, post: 1224367, member: 25644&quot;]I&#039;m sorry, but this makes absolutely no sense to me. You&#039;re saying an underweight coin could be a counterfeit coin instead of a cast coin; in either case, haven&#039;t we determined that a coin is not genuine using a weight test? Surfaces aren&#039;t enough for casts either, unless you&#039;re highly skilled, as the pitting caused by environmental corrosion (especially for metal detector finds) can look just like the depressions in a cast copy. When you&#039;re trying to determine the genuineness of a coin, you use the biggest diagnostics first and work your way down. That would be the physical parameters, like weight, specific gravity, magnetic susceptibility etc. </p><p><br /></p><p>In what circumstance would buying a coin that is 15% underweight be a good idea, assuming one is looking for an authentic coin? And also assuming 15% of the mass isn&#039;t vacated by a stylish hole in the middle? <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" /></p><p><br /></p><p>@Simon, those measurements are 0.10 and 0.05 grams off from the &#039;standard weight,&#039; respectively. This is around 1% deviation from the standard, which should generally confirm that those coins are made of the right stuff. Although we know how heavily fake casts plague the 1965 and 2005 quarter series... <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie7" alt=":p" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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