Westinghouse Refrigerator Dish by Hall China Co.

This item is identified as a refrigerator dish, likely a butter dish or storage container, made of ceramic or stoneware. The primary color visible is a matte blue on the exterior sides and top rim, contrasted with an off-white or cream interior. The item appears to be rectangular or square in shape with straight sides. A significant identifying feature is the clear backstamp on the base which reads: "MADE EXCLUSIVELY FOR WESTINGHOUSE BY The Hall China Co. MADE IN U. S. A.". This marking indicates that the dish was specifically commissioned by Westinghouse, likely as an accessory for their refrigerators, and manufactured by The Hall China Company, a well-known American pottery maker. Hall China frequently produced dinnerware and kitchenware for various companies, especially during the mid-20th century. The visible condition suggests some surface wear consistent with age and use, including minor scuffs or dirt accumulation on the blue exterior and potential subtle discoloration on the off-white interior due to age. There's a small, raised, clear or translucent element on the blue rim which might be a handle, a part of a lid (if this is a bottom piece), or a design element, though its exact function is not fully clear from the partial view. The simple, utilitarian design suggests a mid-century modern aesthetic, likely dating from the 1930s to the 1960s, a period when such branded kitchen accessories were common. The craftsmanship appears sturdy and functional, typical of Hall China's durable tableware.