



Contrabass trombone in B flat, one octave below tenor trombone. Brass tubing. Double slide with outer slides fixed together at six points and with a single outer slide brace. Bell section in a round formation encircles the player's left arm. Bell section and slide section connected with butterfly clip fitting on slide receiver. Two water keys with hexagonal cups. Bell stamped: Class A/TRADEMARK/DISTIN/BOOSEY & Co./295 REGENT STt./LONDON/31260