From the color of the clay body and the signature we know this to be from the mid-1950s. The large salad bowl is a rare equilateral triangular shape, very different from the scalene triangular shape of all our other salad bowls, which have no two sides the same length. The set includes four individual triangular salad bowls that were made at the same time and have been part of the set since new. The large bowl is 10” across, small ones about 5 1/2”. Minor flake on outside edge of the large bowl.