The patient is a 1904 York Eb tuba that the client wanted to put a 4th valve on. It also needed quite a bit of dent removal, mostly in the bottom bow.

Off comes the bell for dent removal.

Disassembly before the remainder of the dent work. Notice that the bell is already finished and the 4th valve slide tubing has been fitted.

The valve cluster used in this conversion project is from a York BBb tuba, as well as many of the tubing parts and braces.

A close up of the valve cluster.

The valve and slide cluster assembled.

The finished product. (It plays as well as it looks).

From a different angle.