I think this is getting silly now! Is any knob worth this?

usedtobe

It fits guitars from many other years though..

Sassafras

I never realised the Strat knobs had serial numbers.

Bridgehouse

There's some sad bloke in the US wearing a string vest and eating Cheetos who has done a web search including the terms 'knob' '69' 'grip' 'twiddle' etc.. 

He got awfully excited when Google returned a search with $175 in it - came here and probably cried with disappointment...