~  Valco / Supro / Nat'l String-thru "Bunker" Pickups ~
Schematics
A 1Meg ohms tone pot change-out was common from the factory, from Valco dealers and individuals.

Tone pots were often wired to operate in the reverse direction from today's standard clockwise treble tone / counterclockwise bass tone.
( & I Meg )
Black
White
Or bare silver
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