[Mr70]

It is a keychain.
This was issued by the same company that supplied the annual round cocktail drinking glasses with the cars silhouettes frosted on,and the Super Service keys too.
It was issued during the 1967 model year,but with that rather rough generic Camaro bust.Because of that,some say it's for the '68 & '69 Camaro model years too,but technically it's '67 issue if you notice the window door vent.
I have cases of Chevrolet dealership flyers & memos like this.