Extremely scarce cased Kriegsmarine optical gasmask

One of the rarest gas masks out there; the Kriegsmarine optical communications gasmask or Optische Gasmaske M-44. This gasmask is only scarcely seen and was issued to troops operating gunsights or range finders. The gasmask is in good supple condition and comes with the air hose that connects to the filter. The case comes with the manual in the lid. Super scarce piece in great condition!