This is a set of 4 Bonnie Blue cups & saucers by Fire King. The cups hold 8 ounces and measure 2 1/2 inches tall and 3 inches in diameter and the saucers are 6 inches in diameter. This set was a premium in boxes of Mother Oat's. The markings are Oven Ware, Fire King, made in U.S.A. There are no cracks, chips, or crazing. These pieces were produced in the 1960's.