Gilbert Microscope Mteal Box filled with AHM Mini-Tanks

This is the metal box for a Gilbert Microscope set which I think was first released in 1961. Someone gave me this box about 20 years ago. I used it to store some AHM Mini-Tanks. I fear the four moves took their toll on the models and banged around a bit and most seemed to have lost their roof mounted machine guns and a few other parts. Hopefully the pieces are all in the box.
Mini-Tanks are HO aka 1/57th scale. They are snap together models although they can be a bit complex and cement glue is helpful. I have a couple hundred so there will be a few more mini-tank posts.
Found this case looking for a built up version of an artillery piece I recently bought. Still looking for the built up one.