Dear all,
Hope those of you in the Northern Hemisphere are having a lovely summer and those of you in the southern are likewise having a pleasant winter.

I require some help. Allow me to explain the background to my problem. I am finising my dissertation which examines the evidence for a migration of Belgae tribes to Britain in the Late Iron Age. One aspect of this dissertation involves examining the Gallo-Belgic coinage found in Late Iron Age Britain and arguing that it's introduction is the result of a Belgic invasion. The argument is that since the Late Brone Age gold was not used in Britain, thus gold coinage would have no intrinsic value, plus the Britons in the area of supposed Belgic invasion were not using coinage, thus they would have no need to incorporate coinage into their economic systems. Instead, I argue, the use of gold and coinage must have been imposed on them, to some extent, by new arrivals.

However in order to sure up this theory I need an example(s) of a similar situation where a non-monetary using society has had coinage imposed upon them by an outside force. I was hoping to use the example of Viking settlement in Ireland but after research this is no longer valid.

Can anyone suggest examples (please note I will need references to such examples), ideally examples as close to c.150-50 BC as possible.

Thank you for any suggestions you can give.

P.S. Baloon for the best example!