The Vintage Corning Ware A-3-B Wildflower Poppy Casserole Dish is a 3 Qt Pyrex Lid A-9-C casserole with a square shape and a floral Wildflower pattern in multicolor. Made of Pyroceram and glass, this original vintage piece from 1977-1985 features a glossy finish and is part of the Wildflower product line. With a printed backstamp, this decorative and functional casserole dish is a collectible piece for those who appreciate vintage cookware.