The Bennington Pottery Blue Agate Round Baking Dish is a vintage piece of American spongeware from Vermont. This 10 3/8" stoneware dish features a glossy finish with a Blue Agate pattern, typical of the Arts & Crafts/Mission Style of the 1960s. Made by the Bennington brand, this oven-safe baking dish is a unique addition to any collection of decorative cookware and serveware.