Short Reichswehr period gasmask canister with Cyrillic volunteer name

Rare example in good used condition with a wartime repaint in Feldgrau. The top of the canister bears a Cyrillic name АОЯІОШИН which translates to AOJAІOŠIN. This is most probably a name for a eastern ‘volunteer’ serving on the Atlantikwal. Very hard to find original gasmask with a Cyrillic ‘volunteer’ name