Chambers Cook-Top
Very unusual that they bothered to use gas for the In-A Top Broiler Griddle on an electric CT, Chambers later electric IATBG worked so much better than their gas ones ever did, I guess they hadn't figured that out yet, at least they realized that the electric surface burners were better than their silly daisy burners.
That old built-in ref is about worthless, the fiberglass insulation is these would get full of moisture and water in the bottoms.