??
I don't know what to say to that one.......I think...
You won't find many originals, seeing as how the only way to remove the original knob is to destroy it. Once it's on, It's on forever.
....and Yes, There is a "correct" repro out there.... as I have had them in the past. I just don't know who the maker was as the bag was not marked.
Someone out there sells and makes them.... I just don't know who...yet..
Tony K.