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<p>[QUOTE=&quot;ErolGarip, post: 2821250, member: 88736&quot;]When I entered this field (historical coins in general) as a rookie, I was able to track (on the net) coins with values marked till around 300AD. So, I now see, it goes further back, to 195-200BC with &quot;V&quot; (5) mark of value on a coin. I also saw some Chinese ancient coins, claimed to be as old as 800-900BC, but, I have no idea on them, whether there is any mark of value on them or not as I am totally illiterate in Chinese alphabet and number symbols. </p><p><br /></p><p>Anyway, if these ancient coins with marks of values are rare, and ok, I am convinced about their rarity by your postings, we can say this period (around 200BC) is the beginning period of striking mark of value on the coin and lets stay at this period of Roma coins which have sufficient number of different coins to study invariants between those old days and today. (If those Chinese ancient coins have marks of values on them, then, we can extrapolate them, later.) </p><p><br /></p><p>Since this topic is about the math in the coin which is also relevant to the economy, &quot;Sallent&quot;, if possible, could you write all existing Roman coins of same dates, in a certain short period like 10 year period, say between 190AD and 180AD, in a systematic way like it is done as &quot;1aureus = 25denarii = 50quinarii =100sestertii = 200dupondii = 400as = 800semisses = 1600quadrans = etc.&quot; I am confused about the names by calling also &quot;dime&quot;, &quot;nickel&quot;, etc as it is difficult to see global picture with names which are not systematic.. I&#039;d like to see matematical relations between all those different coins existed in the same short period of Roma days so that we can easierly see global picture of coin&amp;math&amp;economy of those days also.[/QUOTE]</p><p><br /></p>

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