Perforated metal cylinder is made of a thin tinned steel sheet by stamping, rolled into a hollow cylinder and joined by riveting. The arrangement of perforations and relief grooves determines four played melodies; the beginning of the first one is marked by a larger rectangular perforation on the left side of the cylinder.Musical instrument: Orchestrion “Original Walzen Orchestrion No1”, with a key, 597.1-2/ММП

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