Mismatched numbers (cannister is 1943 number 164 and the mask is GM30 from 1938 number 828). There is a spare part in the klarscheiben compartment and the klasrcheiben. The straps are here but they are wrapped around the cannister. The cloth and the spring are inside also. There is only one bad thing, a small hole near the top.
But for 40e im happy Also pardon my photo skills