Bb-Pistonvalve-Trombone mod.ASL-900, by Arnolds & Sons
Yellow brass bell plasma welded
Reinforced bell with bead wire
Nickel silver inner and outer slide
Ring on 3rd valve
3 Perinet monel valves
Traditional water keys
Bore: 12,4 mm
Bell: 20,5 cm
Yellow brass lacquered
Mouthpiece, case and accessories