Short pre war Polizei gasmask canister named Volkmann

Short pre war Polizei gasmask canister named Volkmann with period attatched straps. Short pre war example with the high lid that started its out in smooth green paint which was factory repainted in a textured Feldgrau paint. The top and bottom are named Volkmann. Underneath there are several unit abbreviations which are partially visible to a Polizei unit. Hard to find Polizei attributable gasmask!