King Trombones have been the choice of professional musicians for generations. Known for their flexible, but beautiful tone, easy playability and solid construction, King has continued to be the name in Trombone. This 3B also features an F attachment allowing for easy playing within an orchestra or wind ensemble setting. Imagine the flexibility of a .508" bore but with F attachment for all of your big band or Beethoven needs?! The slide and inner slides are in excellent condition. The valve section/bell date back to 1972 and the slide has a separate serial number of 99xx. The whole trombone, including valve section has been adjusted and regulated by our in-house repair tech.