Holton Valve Trombones
Holton TR690
Holton TR690 Holton TR690 Description: "Holton" - .484" bore, 8" yellow brass bell Key of Bb. .484" bore, 8" hand-hammered bell, Monel pistons, nylon valve guides, lacquer finish.
Holton TR690 Holton TR690 Description: "Holton" - .484" bore, 8" yellow brass bell Key of Bb. .484" bore, 8" hand-hammered bell, Monel pistons, nylon valve guides, lacquer finish.