Orchestral & Wind Instruments
B&S 3100/W-L F-Tuba (PT-12)
B&S 3100/W-L (PT-12) F-Tuba, F Tuba, Brass body and bell, Gold brass lead pipe, Nickel silver inner and outer slides, Bore: 19.00 - 21.00 mm, Bell Ø: 420 mm, Height: 970 mm, Weight: 8.60 Kg, 6 Rotary valves - valve arrangement 4+2, 3B ball bearings,...
https://www.bizrate.co.uk/orchestralinstruments/b-s-3100-w-l-f-tuba-pt-12-oid343932505.html