1978 Mazda Savannah RX-7 Frisbee

A frisbee offered by Mazda to celebrate the Savannah RX-7 winning Car of the Year in 1978, although I can't find any record of this being true... 

Regardless, I am yet to see another one of these frisbees listed, this really is a rare piece when it comes to RX-7 history.

Item is unopened, condition of packaging is as expected for 46 year old packaging.