Abarth produced some exciting sports cars in the 1960s. The Bialbero (double overhead camshaft) cars were used on the tracks and with their small engine performed really well.
 
Apart from the Fiat engines, they also used Simca 1300cc engine in a small number of their cars. That's the car shown on this pin.
 
A cute item to have for anyone keen on these cars and their memorabilia.