What is the going price on a nice 1971 Dodge Dart Grille?

I bought a not show, but pretty decent original grille with head light doors for my 71 Dart Swinger. Just sold the car, but this grille wasn't part of the deal. Thinking of putting it on the 'bay, or offering it to the guy who bought my car. What is a fair asking price for such a piece? What years is it correct for? 1970, 1971, and 1972? thanks, Guys!