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Koll Guitar Company - Knobs, knobs, knobs... our Koll custom knob was inspired by a vintage bakelite radio knob from the 1940s. We like it because it's a versatile design that seems
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National HRP Bakelite Radio Knob Mid Century Rectangular - Etsy UK
RADIO KNOBS (knobs.htm)
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Bakelite Knobs in Collectable Radio Components & Parts for sale | eBay