This Bauer Pottery Nesting Ring Ware set includes a Delph Blue #30 bowl and a Yellow 24 Mixing Bowl. The ceramic bowls were produced in California in the 1940s and are stackable for easy storage. The set is perfect for all occasions and adds a vintage touch to any kitchen. The bowls have a glossy finish and are round in shape. The backstamp is impressed and the production technique is pottery. These original bowls are not only functional, but also decorative, making them a great addition to any collection.