King Super 20 Bb Trumpet (1960) SN 374475 (S1 bore)(very rare)(professional)

King Super 20 Bb Trumpet SN 374475 (S1 bore)(very rare). All valves, slides, pistons and water keys work well. New top cap felts, new valve felts, new water key corks. Professionally Ultrasonically cleaned and polished. Comes with nice locking case with keys and original mouthpiece.