Coat of arms of`René of Anjou (1409-1480)  Duke of Anjou, Count of Provence (1434–1480), Count of Piedmont, Duke of Bar (1430–1480), Titular King of Naples (1442–1480), titular King of Jerusalem (1438–1480)
Ottfried Neubecker, Roger Harmingues, Le Grand livre de l'héraldique, ISBN 2-04-012582-5

Design helmet[1]
Example variants helmets in profile [2], [3]
Heralder