Centura, Blue Floral On White, Coupe Shape. Cornflower Blue by Corning. Actual: 1957 – 1988. First produced in 1957, Cornflower-Blue is a now-iconic Corningware pattern that showcases a simple yet charming floral design. Through the years, this popular oven-to-table pattern has been produced in a wide variety of piece types, and is a terrific way to add vintage charm. 2 Quart Square Casserole with Lid, Cornflower Blue. Special Characteristics: P-16-B, P-12-C. Condition: Used – Very Good. And is guaranteed to be in very good condition as show in the pictures.