Vintage California Potters #610 1960's 70's Ceramic Stoneware Clam Shell Plate Dish Vintage 1960's 70's, possibly, raised Clam Shell design with basket weave background and rope detailing along edge of plate/dish. All white with middle dip like slightly deeper and smaller shape ribbed clam with 6 outer bordering clam placements. Regular size dish weighted ceramic, stoneware in an off white glaze. Shiny. Dishes, Plates, Vintage, Clams, Food, Kitchen, Seafood, Seafood Boil, Clam Shell, Shell fish, Collectable, Vintage, Pottery, Ceramic, Stoneware Size 10" L x 1" H x 10" W Color Off White Great Condition! Signed Calif USA 610