Nice notes! I'd like to see your article when it's done - it sounds interesting. Maybe it can be posted here?
I'd agree that money talks, especially in politics (unfortunately). But I also think what a banknote is telling me about it's country when I look at it. Whether it's a political figure, poet, painter, wildlife, commerce, education, or what - have - you, a banknote can say a lot about what a country is, where it's priority's are, and where it may be headed. It is a symbol of national pride and can sometimes be a symbol of revolution and change. There is so much that can be read from a banknote that escapes most people, but a little research will give a good amount of insight into the place it comes from.