Conn, Clear Bore, E flat tuba, 3 piston, 1885 Tag #: 01599 Serial #: 9044 Bell Diameter Bore Size Height 14 3/8″ .593″ 30 1/4″ Comments: “MADE BY / C.G. CONN / ELKHART / IND.” on bell. Direct passage between 1st and 3rd valves; air flows 2-1-3; no connection between 2 and 3. Share this:TwitterFacebookLike Loading...