King 6B Duo Gravis Bass Trombone 1970's

King 6B Duo Gravis Bass Trombone from the late 1970's.  This is a dependent valve set-up with updated split triggers, has great ergonomics and has been improved from original configuration.  Has 9.5" Yellow Brass Bell and light weight nickel silver handslide with yellow brass endcrook.  This horn has been around and played on a bit.  A few dings and minor flare creases removed.  It still plays great, exactly as it should.  Would be a great fit for anyone looking for a pro level bass trombone not ready to move into the 3-6K range.  Would make a perfect first bass trombone for any level player.  No service needs to improve playability.  Includes a new Protec Max case.  In-stock for immediate delivery.