Westinghouse Hall China refrigerator dish in green. This is the Hercules pattern, which was manufactured from 1940 - 1941. This dish was a promotional item for purchasing a Westinghouse refrigerator and made by the Hall China Company based in Liverpool, Ohio. The company was contracted by refrigerator manufacturers to make leftover, butter, cheese, and water ‘refrigerator-ware’ for their refrigerators in the 1930s and 1940s. Robert Hall developed the new process o...f single-firing wares to eliminate a second glaze firing and therefore speed production. This also allowed for brilliant colors to be used. This small leftover dish is ink-stamped on the base, “Made Exclusively for Westinghouse By The Hall China Co. / Made in U.S.A.” Hall China (now a part of the Homer Laughlin Companies) still maintains a manufacturing and visitor/retail space in East Liverpool, Ohio.There are no chips, cracks or crazing. Excellent condition.