Valve trombone.

Technical description: Silver-plated brass; long model with valve loop tubing directed backwards for better balance; Mainz bell rim; joint between sections with cylindrical tenon on valve section and ligature restraint on bell section. Main tuning-slide proximal end is a bore step with no corresponding step in outer diameter. Dummy tubing where actual windway passes through valve cluster. Cranked bell stay. With water-key and fitting for music-card holder.; Nominal pitch: B?.; ; ; ; ; ;