Besson, Stratford Model 588, BB flat tuba, 3 piston, c.1959 Tag #: 200302 Serial #: 293712 Bell Diameter Bore Size Height 12 7/8″ .689″ 31 1/2″ Comments: “BESSON / STRATFORD / MADE IN ENGLAND” on bell. Share this:TwitterFacebookLike this:Like Loading...