Posted by Mike on March 22, 2001 at 18:14:15:
In Reply to: Berliner Pumpen posted by Klaus on March 21, 2001 at 23:17:45:
I worked on two BBb tubas with three "pumpen" with two tone 3rd valve in around 1990 owned and still in regular use by a German speaking public school outside Petermaritzberg in South Africa