197? International Loadstar 1600

The Loadstar was a line of medium and heavy duty trucks built by International Harvester from 1962 to 1979.  One of their most notable features was the hood, which opened on each side in a butterfly-type formation.  Rear-hinged hoods, such as on the truck seen here, were only available as an option beginning in 1972.  The "35" in front of the bison skull on the license plate indicates that this truck has been registered in Sanders County, Montana.