This ferrule is common on UK amplifiers like Vox, and often comes unscrewed and gets lost.
Caig Deoxit DN5 Spray Perfect Straw Mini Size (1.4 oz)
Switchcraft W-SC-W16 Pickup Selector Toggle, SPST Black
Pure Tone 1/4" Stereo Barrel Jack S-H652N
More Gain Parts K680 Pinch Knob Black Set Screw
Switchcraft W-SC-12B 1/4in Jack Stereo Double Open Circuit