Conn 89H Artist Symphony with convertible F rotary attachment
Date: 1970's. Owned by Gary Sloane
The 89H (so I am told) is essentially a convertible 88H with both an F-attachment and a straight neck pipe. Following the 88H it would have a #½ bore (0.547") and an 8½" bell, which is rose brass as is clearly visible in this picture. The 8H and 88H bells are the same as this one, although those pictures don't show it well.