This is a vintage General Motors Motorama advertising token from 1955.

It is a souvenir from the GM Motorama, an auto show staged by GM from 1949 to 1961.

The token lists the GM car divisions: Chevrolet, Pontiac, Oldsmobile, Buick, and Cadillac.

The 1955 Motorama was notable for showcasing "dream cars" and new production car developments like the four-door pillarless hardtop and company-wide wrap-around windshields.

This spinner is about 1.35” at it widest.