Posted by Klaus on February 16, 2003 at 11:49:20:
Found a series of pictures of a "Pro K" BBb 3 top pistons tuba.
All of these pictures can be found through the link given below.
The bell engraving puzzles me. As far as I can see, it must have been placed with the letters upside down. Does that point towards a maker, who can not read Latin letters?
Klaus