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<p>[QUOTE=&quot;dougsmit, post: 3505646, member: 19463&quot;]Yes, I prefer to call it an alloy mark to avoid confusion that some have calling the XXI a denomination or relation like 21 of these make something else.&nbsp;&nbsp; Did everyone notice that the coin posted by ancient coin hunter was from a mint that replaced the XXI mark with the Greek numeral equivalent KA?&nbsp; Either way it is a ratio of 20 parts copper mixed with 1 part silver.&nbsp; In modern times we tend to say there is one part of silver in a total of a weight or one in twenty rather than one added to twenty. This might seem a minor point but one in twenty is 5% while one added to twenty is 4.76% which is closer to the alloy tests that I have seen reported on these.</p><p><br /></p><p>A couple more KA coins are below.&nbsp; We might also mention that many mints of the period left the top of the A more open than we might like making the letter look like an H.&nbsp; Today we modern computer users can select from hundreds of fonts.&nbsp; We need to allow for the ancient Romans having some variety in the way they made letters, too.&nbsp; [ATTACH=full]929713[/ATTACH]</p><p>[ATTACH=full]929710[/ATTACH][/QUOTE]</p><p><br /></p>

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