This is a three piece spun aluminum bun warmer with black bakelite handles. It is marked "Serving Oven Trade Mark A Product of West Bend Aluminum Co West Bend, Wis., U.S.A." on the base for West Bend. It is also marked "Use Over Low Flame." There is a insert liner with holes inside. The aluminum is scratched and scuffed generally all over, more on the base than the lid. Aluminum is a very soft metal and this type of wear is typical for vintage pieces. It is 10 7/8" wide across the handles.