Chrome Wiper Switch Knob for 1971 Dart Swinger

can you post up a pic of the knob you need I think I have it and could you maybe make a new retainer spring ? drill and tap it for an allen set screw? or a lil bit of wheatherstrip adhesive so it can still be removed?
Bookmaker said
I need a chrome wiper switch knob for my 1971 Dart Swinger, with the inner spring intact.

Only a knob from a 1968, 69, 70, or 71 Swinger or 4-door Dart from those years will fit. Knobs for Duster, Demon, Scamp and 72+ Darts with the square speedometer dash will not fit as the shaft size is different.

The spring from the knob on my car is missing and the knob just falls off without it.

Hoping someone has a nice one as this is for a 27K mile survivor.

Thanks much!
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