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<p>[QUOTE=&quot;dougsmit, post: 2519638, member: 19463&quot;]That is exactly what led me to the question.&nbsp; We see a few identifiable plants on ancient coins.&nbsp; The Rhodian tulips are the name of the city but look rather little like the products of selective breeding we call tulips today.&nbsp; Silphium plants were valued for medicinal uses.&nbsp; We see similarly placed seashells which we find were important sources of valuable dyes.&nbsp; If the thistle is what we see here, what feature made it important?&nbsp;&nbsp; Perhaps thistles would be planted on purpose to ruin land for other uses.&nbsp; Perhaps an extract from the plant had a use we have since found a better solution (in the time of Vespasian, urine from public toilets was a valuable commodity in the garment industry but we don&#039;t do it that way now.... I don&#039;t think we do, anyway).&nbsp; There must be an answer.&nbsp;&nbsp; Are similar minor types seen on coins of other cities?[/QUOTE]</p><p><br /></p>

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