[Hallicrafters] SX-115 Calibrator Knob

[Grant Youngman]

I know it's probably unobtainium.  But does anyone have one of 
these I could get my hands on?  

It's the silver CALibrator knob, for the 1/4" (not 1/8") shaft.

Pic here: http://www.globeking.com/Misc/Hallicrafters-knob.jpg

Thanks .. Grant/NQ5T