Martin, medium, EE flat tuba, 3 pistons, c.1912 Tag #: 02504 Serial #: 8044 Bell Diameter Bore Size Height 16 1/4 .625″ 31 1/2″ Comments: “THE / MARTIN / BAND INST. / CO. / ELKHART / IND” on bell. Ornate floral engraving around identification marks. Share this:TwitterFacebookLike this:Like Loading...