Martin, recording, BB flat tuba, 3 piston, c.1962 Tag #: 01161 Serial #: 215913 Year Key Valve 24.0″ .720″ 47 1/2″ Comments: “THE / MARTIN / ELKHART IND / USA / RMC (enclosed in seal-shape border)” on bell. Ornate floral engraving around identification marks. Share this:TwitterFacebookLike this:Like Loading...