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
Besson Genuine Besson Sovereign Cornet Waterkey Spring
GENUINE BESSON SOVEREIGN/PRESTIGE 1ST VALVE TRIGGER LEVER SPRING (NEW MODELS)
Besson Sovereign Euphonium 1st, 2nd or 3rd Valve Guide, LOW PRICE
Besson Sovereign Cornet Service Kit - Old Model Top Outer Sprung
Besson Sovereign Cornet Service Kit - Modern Top Inner Sprung Models
