Mick, I think you've got the basic info on the company already.

The clarinet has only whatever sentimental value that is attached and you can have fun fooloing around with it, but it's playability is limited and probably at least 90% of the metal clarinets still in existence are lamps. That's not a joke, I'm completely serious. I have a music teacher friend who has made probably around 50 of them and they are very common in the homes of "band" people.

It's also difficult to date using the fingering system since Albert system and Boehm system have great overlaps.

Spaw