Spode Blue Italian Bread and Butter Plate, Set of 4 4- 6-1/2-inch Bread and Butter Plates Made of highest quality Earthware Rich blue chinese inspired pattern created with hand applied lithographs underglaze for vibrant color and durabilty on a porcelain white body Oven Safe to 340 degrees. Dishwasher Safe Microwave Safe Never place empty items in microwave or oven. Guaranteed against manufacturer defects