Euphonicon by Steward, J

The pianos has a cast-iron frame, which also frames the three sound chambers.
The only wood part of the case is the keywell and front and back panels, which are veneered in rosewood.
Iron frame with casters.
The panels and music rack have ornate fretwork.
The piano has three box-like sound chambers in place of a soundboard.
The chambers are rectangular, except at the top, where they are shaped like the shoulders of a cello, a viola, and a violin.