Both were introduced and discontinued in the 50'S. Fenton introduced the Petite Epergne Set with the French Opalescent and Blue Opalescent colors using the Double Crimped 4" Vase & Double Crimped 6" Bon Bon Dish during the 50'S. A shallow indentation was added to the Bon Bon Dish for the vase to rest. A great collector, great to excellent condition no chips, nor breaks with French color white opalescent distinctive as a Fenton piece.