You can usually find write-ups of these fakes, as folks document them, by googling the serial number. http://www.antiquemoney.com/how-to-...ate-states-of-america-500-bill-feb-17th-1864/
I remember as a young kid buying a package of that type at J.J. Newberrys. The only place to buy coins and stamps. Loved their shakes! All of the counter lunch places are long gone from my area Jim