Rare Pressstoff SF14 trench periscope case marked eso 43

Beautiful large Pressstoff carrying case for the SF 14 (Scherenfernrohr 14) trench periscope in untouched condition. The carrying case is nicely marked eso 43 which indicates production by a rare unidentified optics manufacturer. Sadly some straps are broken and the large back mounting flap has been cut off but this is how the carrying case has been found. Most of the internals parts such as the small box for the spare bulb are still present. These carrying cases are hard to find, especially in untouched condition!