Original Roseville Robinson Ransbottom pottery 305-14 mixing bowl in the spongeware wheat pattern, measuring just over 14-in diameter! Other than some typical crazing for a piece of pottery this age, we found absolutely nothing wrong with this bowl. There is one factory defect pictured that shows a small crater inside the bowl. That spot measures less than 1/8 in across. This bowl is huge, beautiful and would be a centerpiece of any stoneware collection!