Thanks to all!

Although I didn't expect that there's a larger community of bandone(i)on players this result is a little bit disappointing.

Possible reason might be that this is not a traditional british resp. north-american instrument but a german invention. Nervertheless, even in german folk musik it does not play any role. On the other hand, it was was very popular in Germany in the beginning of last century. Before radio became available many people made their own hand-made music by means of this instrument. Moreover, there have been a lot of bandone(i)on orchestras still in the 50'.

Manfred