I slightly remember seeing a samba posting for a post card from that organization.
Based off remembrances of the listing, the group was like a M.A.D.D. organization that went around in Beetles and talked about drunk / drugged driving and the dangers there of.
That is all I have, the postcard showed allot of June Cleaver types standing around a beetle marked with the S.O.B.E.R. logo.
I think the beetle was the inlet to the "misguided" hippie youth of the time.
Any markings along the edge of the button?
Sometimes they used to mark the edge where it was bent around the base with a production year on some of the old political buttons I have seen.
It is painted metal over steel back with pin, right?
No plastic over the top cap, right?
KC