This 8 oz. stoneware crock came from R R P Company (Robinson Ransbottom Pottery) in Roseville OH. two contented cows decorate one side. Research shows the maker's mark indicates production after 1940 and this company ceased operations in 2005 after nearly 70 years. Smooth, stain free, no chips or cracks. Measures 4" diam  X 2" tall