This is a B&S F tuba I bought from Hornboerse. Made in Germany, this 5 valve rotary tuba is Perantucci approved and ready for your solo tour. You can see Doug Tornquist and John Noreyko testing and discussing this instrument on their Conical Supremacy podcast.
This is a terrific example of the PT-10. Pitch is right on, high notes soar, it's nimble and projects. Doug said, "This is an incredible audition and recital tuba, I want it. I'm playing F tuba exclusively for brass quintet music these days, so I'm using a larger piston instrument. Otherwise I would need to have this."