Conn, Wonderphone Giant, EE flat tuba, 3 pistons, 1925 Tag #: 02205 Serial #: 222222 Bell Diameter Bore Size Height 21.0″ .692″ 43 1/4″ Comments: “MADE BY / C.G. Conn Ltd. / ELKHART – IND/ USA” on bell. Some floral engraving around identification marks. This instrument has a front facing bell. Share this:TwitterFacebookLike Loading...