12 Ga (SLICS bring back....need ID) ? launching ? tear gas

? launching ? tear gas

I’ve never seen a Federal shell like that… nor could I find anything in David Frederickson’s book about them. That headstamp was used from 1963 to 1992 but the paper hull would push it back to at least the early 60’s, I think, and the primer sealant smells of military. Is there anything on the case wall? Very interesting shell.