TubeNet

Looks like it needs the ebay item number for the link to work:

https://www.ebay.com/itm/Reynolds-BBb-T ... 4534601065" target="_blank

Now just need to find someone with a Reynolds sousaphone to be a test subject...

Reynolds made an Olds O-99 size (.656 bore), on the Contempora label. The Bach Mercedes tuba would naturally be similar to that, but likely somewhat irrelevant to this big one.

I have a 1960 Reynolds Contempora. Now granted; I’m no professional, but there seems to be more than valves missing from this horn.