Fully agree with your observations, Gentlemen...,
But having a closer look on the steering wheel, which Michael grabs, the car appears to be a pre '68 250 SE or 300 SE.
Wheelarch and stips chrome looks factory to me, not aftermarket.
But you could order those (factory-delivered) add-ons "on special demand" basically for all W111 coupé and cabriolets.
Hubcaps and rearview mirrors say '68 (or later).
The car seems to have some mixtures of the details.
Let's see the VIN, then we know for sure ...
Achim
(always been a great W111C admirer)