
(^ note the flattened tubing at the ports.)

(^ crowd of tubing seen from beneath, all ports on the same side of the case.)

Working pretty well for me so far. It has had some knocks in its long life, and a rough journey here, so it's due for a little fixing up, but the sound is not greatly impaired. Full, almost sweet, from the top to the bottom, but with plenty of edge when pushed. Intonation isn't a problem - partials are all good, the ones I have any use for anyway.
The short action valves, I think someone here had one from the '30s and Dan's Holton sousaphone is '46. From the serial number, mine's '41. I like them better than I thought I would. The tuba plays well enough, and they're so light and easy! Model number is unknown to me, I guess other than the valves it's similar to model 105.
I don't know if it's the valve design, or it there's something else going on here, but it's harder to get full resonance in the range a couple ledger lines below the staff. D, C, B, even Bb. These notes actually don't sound too different when I play right up against a wall, but that difference in resonance makes them seem different behind the bell, and the "slot" isn't very well defined.



