F Tuba F-81A, by MIRAPHONE
model 81A (181 4V)
bell diameter 420 mm (16,535 inch)
443 Hz
5/4
with lyre holder
with strap ring
rotary valves
bore of valve section conical 20,4 - 21,2 mm (0,803 - 0,835 inch)
spiral spring system
mouthpiece TU27
lacquered
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