Corning Ware 1-quart casserole from Corning's Blue Cornflower series from 1958-1988. This is the original Corning Ware Pyroceram glass and ceramic material that can go from freezer to oven to table top. The Corning Ware 411 site lists the embossed back stamp that appears on this casserole is from 1961 to 1966.
This casserole is in good condition with no chips or cracks and light wear and a few usage marks. The cover also has light wear with no chips or cracks but it does have a little notch in the knob. This is perfect for use on the stove top burner, in the gas or electric oven, and even the microwave oven.