Kanstul ZKT 1510-A S C-trumpet, Signature Series, Ø 11,73mm bore size (.462"), Ø 123,5mm bell diameter (4- 7/8"), #229 brass bell, special reverse mouthpipe, 2 amado waterkeys, metal valve guides, hand- fitted monel pistons, ring on the 1st & 3rd slide and stop screws, silver plated, without case and mouthpiece