The Pyroceram Corning Ware 1-3/4 Quart White Blue Cornflower Casserole Dish is a vintage piece from the 1960s. Made of Pyroceram, a space-age glass-ceramic material originally developed for missile nose cones. It is highly prized for its ability to withstand extreme thermal shock, allowing it to transition seamlessly from the freezer straight to a hot stove or oven. *please see all photos for condition. No chips or cracks. It does have marks from a spoon. These marks can be removed with the right product.