Hi everyone, I am researching a coin I have owned for a few years but know nothing about. There is some info on the internet but it is very limited. It is a 2007 1500 Francs Republic of Congo with Romulus and Remus on the back. 0.5 grams. I have read that it is rare, but have no idea of price, or collectability? I paid $38 for it on ebay a few years ago. Can anyone fill in the blanks for me? Thanks!