TubeNet

Big UK-built compensating tuba. Takes Wick mouthpiece shank.
Huge sound and great intonation.
Valves in alright shape, very good for age and make.
INCLUDES wood case in good shape.

US shipping $100, probably Greyhound.

LINK TO PICTURES

Uninformed question: does the fourth valve do what most other tubas' fourth valves do?

No, it's compensating. On its own it takes you down Bb to F like usual, but valve combinations using the 4th valve add tubing so they are in tune 2-4, 1-4, 1-2-4, ect.