E♭ tuba with 3 or 4 valves: every note and the valves to press, with the usual alternatives.
E1*
F1
G♭1
G1
A♭1or 1+4
A1or 1+2+3
B♭1or 1+3
B1
C2or 3
D♭2
D2
E♭2
E2or 1+2+3
F2or 1+3
G♭2
G2or 3
A♭2
A2
B♭2
B2
C3or 3
D♭3
D3
E♭3
E3or 3
F3
G♭3
G3
A♭3
A3
B♭3
B3
C4or 3
D♭4
D4
E♭4
E4or 3or 2
F4or 0
G♭4
G4
A♭4
A4
B♭4
* Needs a compensating tuba or a 5th valve.