As the 'Definition of what is a coin' section is digressing a bit,here is a section where one can talk about their primitive 'money' such as the Yapese stone money,wampum beads,& cowrie shells. Here is a few more examples of primitive 'money'; Manilla rings from northern Nigeria. Kissi pennies from Liberia. Tea brick money from South America. silver Larins from the Maldive Islands & southern India. If you have got any more information about primitive 'money',then you are more than welcome to post here.
this site has some sweet pics of primitive money. it even has a pic of the infamous sword made of chinese cash coins!http://www.pomexport.com/1images/PrimMoney.htm