Hi Jim, Thanks for your help. You can't see it from the pictures,
but the mouth of the pipes are at different locations in the shaft
and that is what gives them the different pitches.

I had another response from Walter Dahler of Switzerland and he said
he has restored more than 10 of these. The typical scale is: c d e f
g a a# b c d. That solved all my problems! Who would have known that
was the scale?

MMD is great!

Joel Cluskey - Cluskey's Piano Works
Pittsburgh, Pennsylvania