A trigger spring for Besson Sovereign cornets to fit the newer models where the triangular part of the spring points upwards.
Besson / Boosey & Hawkes Sovereign Cornet 1st Valve Trigger Spring - Older Model
GENUINE BESSON SOVEREIGN/PRESTIGE 1ST VALVE TRIGGER LEVER SPRING (NEW MODELS)
Besson Sovereign Euphonium 1st, 2nd or 3rd Valve Guide, LOW PRICE
Besson Genuine Besson Sovereign Cornet Waterkey Spring
Besson Sovereign Cornet Service Kit - Old Model Top Outer Sprung
Besson Sovereign Cornet Service Kit - Modern Top Inner Sprung Models
