Carl Fischer, E flat tuba, 3 piston, ca.1910 Tag #: 200309 Serial #: Bell Diameter Bore Size Height 12 3/8″ .563″ 29.0″ Comments: “PROFESSIONAL / GRADE / C. FISCHER / NEW YORK” on bell. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading...