Vintage R R P Roseville Ohio Pottery Blue Spongeware 16 Mixing Bowl. A great condition Roseville mixing bowl. It has 2 chips only. One right next to the other. The one chip (the bigger one) is 3/8″ x 1/4″ and around. The one above that one is a glazed chip. Has a ring to it when tapped. No Cracks are seen. It is 15-1/2″ to 15-3/4″ in diameter. Not a true roundness. Not a collector of pottery. If you have any Questions, Please Ask. Thanks For Looking and Have a Great day.