Polyphon 15½ inch (39.5cm) Disc Musical Box plays 1744 Die Zauberflote Magic Flute excerpt by Mozart 

This Polyphon Disc Musical Box has a Spiral spring, like those often used on Garage doors here in the UK, rather than a conventional musical box spring motor.
The Musical Box Society Website is www.mbsgb.org.uk
For Further Information please contact youtube@musical-box.org
If you would like to hear More Mechanical Musical Instruments,
please look for Mechanical Music Radio
www.mechanicalmusicradio.co.uk/