Thanks Alfred.
Yes, with a little effort, a new slot and an excavation on the other side were enough to fit the last nylon guide on my 230.
We had 2 options and at last we used the MB original guide that fit perfectly with little adaptations.
As you can see, the early 230 had only 4 tabs.
But even after I read all about this matter , I did not find an answer to my question.
The question made with my first message can seem stupid , but it was made to know if the knob on my car is original or not.
I have a suspect: the first automatic gearbox was produced in 1963, october and my car was completed only 4 months later.
So who knows ? It could be that the first cars with automatic gearbox were delivered with the knob I have because the smooth one was not yet ready. It is possible. Why not?
So I ask again : is there any member that has or has seen a knob like mine on an early automatic 230 SL?
Thanks in advance