This is a vintage mid-1970's King Silversonic Duo Gravis Bass Trombone. It has a solid sterling silver bell with a gold-wash inner bell flare. It has the classic King sound, plays fantastic, and is in mint condition (almost like new). The rotors are "F" and "D". It comes with the original wooden case and has had an ultrasonic cleaning. It would make a great all-around bass trombone for any player.
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