Disc for mechanical music machine called a Symphonion. Tune played is 'Old Hundred'.
Customers inserted a coin into the Symphonion to make the musical disc rotate. Small projections on the disc plucked the teeth of a metal comb, causing music to play.
The Symphonion was powered by a clockwork mechanism, wound periodically by inserting a handle through a hole in the right hand side of the case.
The Symphonion and other mechanical music machines were very popular in Europe and North America in the late 19th and early 20th centuries. The disc and Symphonion were made in Germany.
Can be played in Symphonion. Steel disc, 641 mm for Symphonion.