Kluson® "Witch Hat" USA Knob (1)
Kluson® recreates the "Witch Hat" knob with Volume or Tone labeled silver cap and I.D. knurled with 24 splines. These are molded black plastic with silver numbers to match the center cap.

Specifications:

Material type= White PVC
Spline count= 24 splines for US spec split shaft pots
Mount type= Push on
Lettering= Black on Silver Cap
Numbering = Silver
O.D. of knob base= 1 9/64 in. (28.9mm)
O.D. of center cap= 29/64 in. (11.6mm)
Height of knob= 39/64 in. (15.9mm)

Very cool vintage style knobs.  I pack well and ship quickly.