Iron earth tea and coffee set

Elegant antique tea and coffee set, probably ironstone. Origin: arnhem - netherlands - bauhaus. Each element is hand-painted and signed. The set includes: a teapot, a coffee pot, 6 cups, 1 milk jug. The set is in good condition, but old (1920s-30s), there are stains and 1 visible crack on 2 cups (see photos) which does not prevent their use. The coffee pot does not have a lid; the one on the teapot fits on the coffee pot.