Well, I had to google what this box was used for. All I knew was that its a leftover from/while/during/after WWII - I had it at home for quite a while and now found some time to work on it. The box is made from oak outside, hot galvanized plate (I think) inside and in a real good condition.
I washed the dirt/dust off
I´ve to wait until it dried off to do some oil-treatment and to find a good place to put it.