There is much interest in the state issued hunting/fishing/habitat
stamps. When possible they are collected either never used just as sold by
the state on on the licenses. Misprints of the valid dates would be of
interest. I'm not a heavy collector of them myself but as a member of the
State Revenue Society and the American Revenue Association I know many
members list them as one of their collectin interests.
All revenues are fun (unless you are paying the tax) Art