Conn 82H New York Symphony
Date: 1926. Owned by Howard Knapp
This trombone has a medium bore (0.522"), which is just shy of a #3¾. The tuning slide is in the hand slide. The advantage of this is that it doesn't require a cylindrical section in the bell to allow for the tuning slide. In stead, the entire bell can be conical. There was a choice of bell sizes: 7½", 8" or 8½". Conn advertised the 82H as coming with "new Connite" slides. The 82H was produced from 1924 to 1927.
What Conn said in 1925:
The upper instrument (pictured) is the New York Symphony Trombone, 82-H, similar to the 18-H, but with a larger bore. This instrument will serve for all classes of playing.