Original carrying case for the pressure gauges which I believe were used for charging the recoil mechanism on artillery and tanks. The case is worn on the outside from use and age but still retains enough original paint and markings to have a great look. The interior is also in good condition and it hasn't been completely gutted. The wooden insert is in very good condition. The rubber pads were cut off of the lid interior. This box is massively heavy for a relatively small box. Its made extremely well to protect the delicate gauges. Great accessory for an artillery display. Marked dnv 43 with a waffen amt.