This is a CorningWare Blue Cornflower casserole dish. It comes in various sizes, including 1 quart, 2.5 liters, and 5 liters. The lids are made of Pyrex. This design was manufactured from 1958 to 1988 and is popular among collectors. A set of 3 in 2 sizes. With lids. The large lid has a small chip on the edge, but it's safe to touch. It's not very clear in the photos, but please check the 10th photo. Please understand that there may be some scratches on the bottom and top surfaces. Gratin dish