They were used on lots of Magnum cars in 78-79. The wheel is steel with slots around it so the potmetal insert can be bolted on from the back of wheel. They had a thin trim ring on the outside that is usually gone. These were the replacement for the wheels with the built in urethane fins on the earlier Cordoba/Charger/Fury. Don't think there is any great value in them even though the steel wheels were deep dish.