Besson Prototype Class A (50 Medals of honor) (Besson Brevete) (1944) Bb Trumpet SN 131616 (Professional)

Besson Prototype Class A (50 medals of honor)(Besson Brevete)Bb Trumpet SN 131616. Year 1944). Under restoration. All valves, slides, pistons and water keys work well. New top cap felts, new valve felts, new water keys corks. Professionally ultrasonically cleaned and polished. Comes with original Besson case and Bach mouthpiece. 1 lock hinge missing on case as shown.