Hiya im new to this site and have had an interested in ww2 especially planeS since i was a kid, the noise as they fly over i love it i have been heard to shout that sounds like a ww2 plane lol anyway to the point im after some info on this box, its obviously a very secure box for something but what? its black (black box?) and is 12 inch tall by 14 inch wide and 12 inch deep It is marked: A^M H523751 / 43 / C22B REF. No 21C / 1590 PAT. No 454933 K.Ltd 1944 I cant upload pics for some reason?, thanks