The German Emerald Polyphon, detail

The Emerald Polyphon is an impressive instrument using 22-inch diameter discs and featuring 16 tuned orchestral bells playing in unison with the 2 sonorous music combs. There are only 12 known examples to exist in the world. The Emerald Polyphon is illustrated and listed as the definitive music box in The Encyclopedia Britannica. The Musical Wonder House is the only museum in the world where this model music box may be seen and heard. At the Musical Wonder House in Wiscasset, Maine.