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<p>[QUOTE=&quot;kaparthy, post: 1971268, member: 57463&quot;]It does indeed seem to be true.&nbsp; In fact, I have used the &quot;ring test&quot; myself and I am not alone in that.&nbsp; The Chinese &quot;shroffs&quot; could do a coin a second by balancing and ringing with their fingers on one hand.&nbsp; I have had to be laborious in balancing the coin on my finger and tapping the coin with a pencil.&nbsp; But it works.&nbsp; You can easily tell a struck coin from a cast.&nbsp; I believe that with training - they had &quot;shroff schools&quot; for apprentices - you could learn to hear more detail.[/QUOTE]</p><p><br /></p>

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