nicely patinated original american art deco style c. 1920's-1930's antique ornamental cast brass interior chicago apartment building "speak-a-view" combination peephole opening and plaque with fanciful integrated "waterfall" doorknocker, name and/or, apartment number. the decorative door hardware backplate mounts flush against the surface of the door. the swinging knocker is securely attached and fully functional. the highly stylized art deco designed motifs are found throughout. designed and fabricated by the hoover howe products co., chicago, il. similar art deco style door knockers available.