I have the following emblems for sale. These are GM issue for the rare 1984-85 Riviera w/the turbo option.
They're made of metal* and the NOS sets still have the factory double back tape attached.

I have 2 NOS sets (2 emblems per set) $100.00 for each pair
I also have 3 used excellent emblems (will require new tape) at $40.00 per emblem
*NOTE: I also have a plastic pair which I'm not sure where they were used. The plastic NOS set is $50 for the pair.

Shipping included to the lower 48; PayPal add 3% please
Message me for any additional details. Thanks!