Bach, Conn & King, Marching Baritone, Valve Springs, Set of 3, D15.3mm x L42mm. Genuine Conn-Selmer springs. See my item 273784542601 for a repair kit.
136ESP Conn Marching Baritone
136E Conn Marching Baritone
1124 King Marching Baritone
1127SP King Marching Baritone
1124SP King Marching Baritone
1127 King Marching Baritone
B1106S Bach Marching Baritone
B1106 Bach Marching Baritone