I purchased this "Lamp,
Operating, Field Item 99315" at a recent Military Vehicle
Show to go with the Medical Impression. It has seen very minimal if any
use. Initially I questioned whether it was WWII but when I got it home
after the show I found that some of the spare parts inside were wrapped in
a Buffalo NY newspaper dated 1942.
The light is made by the Wilmot Castle
Company, Rochester, NY. It originally ran on 6 volt emergency batteries,
110 Volt or 220 volt. You had to change the physical bulb when switching
power sources. The case is tar lined and over the last 84 years some has
come off on the lens. Looks like gasoline will clean that up.
If anyone has any comments or questions
be sure to pass them along.