Conn, EEb Helicon, 3 “Stoelzel” Piston Valves, c.1884
Conn, Clear Bore, EE flat helicon, 3 piston, c.1879
Conn, Wonder, BB flat helicon, 3 piston, 1888
Conn, EE flat helicon, 3 piston, 1898
Conn, New Wonder, EE flat helicon, 4 piston, 1913
Conn, New Wonder, BB flat helicon, 3 piston, 1917
Conn, New Wonder, BB flat helicon, 4 piston, 1917
Conn, New Wonder, EE flat helicon, 4 piston, 1921
V & E Simonetti Historic Tuba Collection 