Though there is no name brand on this illuminator box, I am suspicious it is an early Tuthill model because many of their items, particularly the C8 solar filters, have this exact gold paint.
One of the battery terminals has come loose and no longer holds contact to conduct current. The assembly is complete; the terminal is simply loose. Once this is re adhered, this illuminator box will work just fine.
Runs on (2) AA batteries, which you will need.
Comes exactly as you see it friends.
All nations welcome.