This Symphonion came out of a Paris amusement hall. It is coin operated using centimes, although Australian 10c coins will suffice weight and diameter wise. The springing in the motor drive had been taken away when I acquired it and I was never able to source a satisfactory replacement. I made the decision to utilise the coin operation mechanism with a very early electric singer sewing machine motor which is quite ornate in itself. I made a wooden pulley of sufficient diameter to rotate the main drive gear and turn the music disc drive at very close to original speed. The operation of the Symphonion is smooth and the music sounds good. The discs are 54cm and the unit sits on its own disc box.