Nederlandse filterbus, Model III, verpakt in originele kartonnen doos (tbv civiel gasmasker Model III), Type 009 [1939] Nederlandse filterbus, Model III (tbv civiel gasmasker Model III), Type 009 [1938] Nederlandse filterbus, Model III (tbv civiel gasmasker Model III), Type 009 [1938] Nederlandse filterbus, Type 012 (tbv civiel gasmasker) (1939, Duiker)
