This a Large Corning Ware Covered Casserole or Dutch Oven in the Beautiful Shadow Iris Pattern, with its Pyrex clear Glass Lid. This is one of the "Contemporaries"; according to Kyle Coroneos in his book, "The Complete Guide to Corning Ware..." , Corning introduced several more contemporary styles to keep up with kitchen trends starting in 1985.
This Corningware measures 12" across the handles, 10 1/4" across the other side and 4 1/8" high all measured not counting the cover. It has some use marks, the gray marks around the casserole near the bottom and bottom and some marks on the corners of the handles, but it is in very good condition with no chips or cracks and is shiny . It is marked under handle A-5-B 5 LITER and Corning Ware under the other handle. This is a heavy casserole.
Corning Shadow Iris 5 Liter Casserole