https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F382839842146
Or
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F153516099117
Did you use either on of those? The first one says its fort a 206.
I will head over to the local hardware store today and see if I can find the NE72 made in Italy for the French car lock/switch. That is the easiest style to modify unless I can find the first link you suggested that has nothing but a shank onto which I can affix that knob.