Self-playing zither triola

Lot 8564 limit € 350

Manufacturer: Paul Riessner, mechanical zither for 25-tone rolls, the bass tones are played with the left hand according to the notes (1-6) indicated on the roll, the right hand operates the crank, good original condition, with 64 additional rolls - literature : D. Browers, Encyclopedia of Automatic Musical Instruments, 1977, p. 356, unusual collector's item, around 1919