This Westinghouse roaster oven model RO-541 came on the market in 1954. It measures 2 feet wide handle to handle by about 9 inches high, not including the height of the lid. It comes with a removable black porcelain enamel liner pan which is 17-1/4" by 11-1/2" by 5-1/2 inches deep (interior measurements).
Included are the original metal rack and cord. Above each side handle are handy metal clips that hold the roaster lid while you baste your turkey or check cooking progress.
The roaster heats up fine and is super clean. There was some tape residue on the edges of the liner pan when I took the photos but I've since removed it. The enamel has no chips or scratches, it appears the oven wasn't used very often. The front is spotless and gleaming - no grease or kitchen residue. The sides and back have some minor scuffing and tiny scratches from storage and normal cleaning. The aluminum lid has a shallow ding near the center of one side. Unfortunately the glass lid insert is broken - it's a clean break and I've taped it together so the buyer can repair it with whatever glue is preferred - of course if you don't need the window (which tends to fog up anyway) aluminum foil makes a fine replacement. These ovens were outrageously expensive in their day but they were built to last.