This is a pin back with a butterfly clutch. I found several of them at a church rummage sale.
According to the friendly and helpful person whom I contacted at the Sevierville Chamber of Commerce in reference to this pin, this was issued sometime in late 1988 or early 1989 by the Chamber as a handout for miscellaneous groups visiting the city.
It is 7/8″ wide and 1″ tall. Gold paint on red plastic.