Hello Charles,
Norm is correct.
The original ones are NLA but unfortunately the only proper way to go.
"We" had them reproduced in the group
(well 'we' ... more accurately ... Alfred organized that) a couple of years ago.
The result was a good match but the plastic material the workshop did was not so good.
Still the only way to go.
Ask Alfred whether he still has some or not.
If not try to find original ones. They're unique to the 230SL/250 SL-early - none of the W110/W108 ones fit properly.
None of the aftermarket sellers has the proper ones - very sad.
Good luck !
Achim
(with old&poor ones)