Visually fits the theme, but conceptually, I don't think the dollar is a minimal form of money, globally. If it was, the photograph would be more compelling in this particular competition. But right now it's just a technically great photograph that I'll soon forget.
There's an element to photography that is elusive depending on the subject of the photograph. What I mean is, if you are going to take a picture of something that crosses over from art to the "real world", and then put it in a contest where the main objective is to display "minimalism", i think the rest of us will assume that you are offering commentary on the main subject, which is the dollar.
I don't think you did that, so I think I'll give it a 4, because despite the technical greatness of the piece, you gave yourself some extra responisiblity by involving this particular subject.