Just picked this up today for a couple bucks:
There are no markings, other than a stamped "Pat. Appld For" on the underside of the base. The rubber band is to hold the two halves together, as one half had its "mounting tabs" straightened. Bulbs are marked "Japan".
Colorful bulb holders:
It actually works, but as you can see, the wires are pretty much shot, which leads me to my question: how does one go about replacing the wires in what appears to be a "sealed" unit?
Mark in Oregon