I'm fairly ignorant and was totally oblivious to the fact that Chile exported anything other than very good wine. Kinda surprising to find a bullion coin from there and unusual (where I live, dunno about the states) and so I quickly bought it, mainly because it was a cheaper alternative to a ducat and the same weight but still. I got it through today and it's a wee beauty but has a tiny black spot on it that you can't make out in the pics - anyone know how to clean this off without damage? Any info on these coins would be much appreciated