Identifying a repunched mint mark is not my strong suit. Opinions are welcomed on whether any of these six nickels display this flaw. They were all secured from a coin roll hunt. Thanks so much.
I see no RPM's , But I only have photos to inspect. You can compare your coins here. It will help with your identification deficit. https://doubleddie.com/1469129.html http://www.varietyvista.com/05 JN RPMs/RPMs 1964D.htm