A Model 16 Knopf approximately 50 years old, played professionally throughout its existence. Easy high register - enormous open low register.
Formerly played by a member of the City of Dusseldorf Orchestra (engraving on bell) - has Schmid ringset.
Valves rebuilt by J. Landress Brass and has Felix Cantesanu pipe mounted and also comes with John Gough Elemental Brass pipe.
Used, with excellent compact cut bell case.