400 Series Opal White Mixing Bowls Set Years Manufactured: 1954 Sizes and ID#s: #401 (1.5 pint) #402 (1.5 quart) #404 (4 quart) These unusual pure white Opal Mixing Bowls are similar to the Primary Color Mixing Bowl set in size, but they are all white. The bottoms are plain except for size numbers. The # 403 2.5 QT bowl is missing from this set.
