Heckel, BB flat tuba, 3 rotary, c.1925 Tag #: 09015 Serial #: Bell Diameter Bore Size Height 17 3/4″ .820″ 47.0″ Comments: “Heckel / Custom Made” 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...