8O Interesting Reading at least. Thanks to the esylum. http://www.yale.edu/lawweb/avalon/econ/coins.htm
If you enjoyed that one - see what ya think of this one. You might be surprised how little things change. http://www.ece.iit.edu/~prh/coins/lib/usbm/
The More Things Change I thought it was pretty insightful the way the author identified COPPER as the first form of money. It was not, but the assertion is illuminating. It shows that the writer (speaker) saw beyond gold and silver as money. Also, his sources were LOCAL histories, Florentine histories, which we tend to lose track of since numismatics is predominantly hellenic since the days of Barclay V. Head.