You might just luck into something. Here's a random selection, coins look crappy http://lasvegas.craigslist.org/clt/304792008.html
the rare upside lettering "error" http://newhaven.craigslist.org/clt/290744447.html You have to wade through collectibles to find anything. It might be worthwhile to list under wanted to buy CL is useful for many things like cars,tickets,rents,etc, and free