I have been unable to get the photos to work, hopefully you can give me some ideas anyway?
The lantern is V shaped on the back with a hanger on the left side (like it would fit into a corner). The top is like a little chimney with a tab that locks the top. This also has a handle attached. The front has a concave with a concave blue glass light on the front. There is a little oil lamp inside that fits into a sliding track so it won't spill. There is a little wheel that turns up the wick.
To hold the top on there is a copper screw that fits into the top.
My mother in law played this harp for years and it could have been her mothers for sometime before 1917 not sure. Both are deceased now. There are pictures of her playing it. I'm having trouble adding pictures to this box.