[Hallicrafters] S-27, S-36 Knob Wanted

[GARDGORE at aol.com]

Does anyone have an "AM-FM" knob for the above available? The style is like 
those used on the SX-28 but with a plain black skirt with only a small arrow 
to point the position of the switch. 

Thanks,
Greg; WA1KBQ
Charlotte, NC