The item is a vintage Hall China #420 rectangular casserole baking dish.

This specific style features a glossy light blue exterior finish with a clean white glazed interior. It measures approximately 6 1/4” x 4 1/2” and is highly collectible among fans of vintage American ovenware and diner-style tableware.

These baking dishes were made by The Hall China Company in East Liverpool, Ohio, USA.

• Where: East Liverpool, Ohio—often referred to as the "Pottery Capital of the World" during the 20th century.

• When: This specific periwinkle/delphinium blue pastel glaze and rectangular style were produced primarily during the 1950s. It perfectly matched the mid-century aesthetic boom for colorful, durable kitchenware and appliance accessories.

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