Hi,
I'm not really a tuba player, I play bass trombone. I thought it would be fun to have a euphonium so I bought one for $20 on ebay. It turned out to be an Eb tuba!
It's a "Goumat" from... I don't know... 1900?
Here we are playing Gustav Holst's "Cranham" AKA "In the Bleak Midwinter"