Good question. Not many price guides deal with RPM's, Rotated Reverse, over dates, etc. Would be nice to have a web site for all the error coins but then it would have to be really extensive. Imagine with just your nickel. There would have to be a listing for a single RPM, Double RPM, etc. Then a list for all the different grades too. Add in the 37D 3 legger and you now have a very long list and all for just one type and year coin. I guess it could be done but that sure would take a lot of research, time and work.



















