Here is a used Conn 6H Bb Tenor Trombone in lacquer. This 1958 (S/N 743xxx) Conn features a .500" bore hand slide and 8" bell flare. For a trombone that is over 60 years old it is in great shape! There are some lacquer loss, most heavily on the bell tuning slide. The slide action is great and the rest of the trombone looks fairly trauma-free!
Here is what Conn said about the 6H in 1955: "Used and preferred by many of the nation's top professionals in TV and radio, this fine trombone has a specially designed modified large straight bore that's ideal for all types of playing. Has famous "Airfloat" slides with long slide bearing for fast, positive action and smoother 6th or 7th positions. Outside slide is of special Conn bearing formula brass alloy. Highly polished brass, nickel trim, clear lacquered." The trombone comes with a fusion gigbag.
$900 + Shipping