Antique Cylinder Music box Probably by Langdorff or LecoultreMechanism :The cylinder is about 29cm long and plays 6 tunes on 2 Combs. 1 comb plays louder than the other resulting in a Forte Piano effect.This is an early Keywind mechanism.A lovely case with nice inlay and marquetry to the lid.No tune-sheet available.Wear consistent with the age About 1860, SwissVideo: https://youtu.be/QCXb8ohz3MQ