Small vintage Vitrock depression glass mixing bowls. c. 1930's. I have 2 in the store, the price is for one bowl. Very small white depression glass mixing bowl. Both bowl are marked 'Vitrock' on the bottoms, which I believe was the name Hocking Glass Works used at time, and it is shown in the Kitchen Glassware book by G. Florence on pg. 114. It is 6.5 inches wide. The smaller bowls like these are said to be the hardest to find. No chips or cracks, and just shows some minor wear on the interior and on the bottom rim.