This listing features a set of two lamp sockets, deco design, heavy-duty, with long threaded screw connectors on the back of each.  The sockets measure approximately 2" square, and approximately 2" tall.  The sockets may be salvaged from a nautical application, possibly military, but I'm not sure. 

The visual condition of each socket is excellent--no chips on the face of either socket, good glaze;  the sockets are untested for electrical connectivity, but I checked that a standard bulb fits each. 

I do not know the manufacturer of these sockets.  There are markings on the back of each that may help identify them.  See the photos.