Orchestral & Wind Instruments
B&S 56AFT "Fossi" F-Tuba
B&S 56AFT Fossi F-Tuba, F Tuba, Alessandro Fossi model, Brass body, Bell made of gold brass, Bore: 1st-4th valve 20.00 mm / 5th +6th auxiliary valve 21.00 mm, Bell Ø: 420 mm, 6 Rotary valves - valve arrangement 4+2 post-set valves, Half-tone...
https://www.bizrate.co.uk/orchestralinstruments/b-s-56aft-fossi-f-tuba-oid5177282329.html