No Rodd,
Tom refers to the door panel armrest which looks different from ours in US-version 280 SLs.
Those look basically like the backseat door panel armrests of a W 115 sedan.
However, Tom is right, 280ies with leather interior had also the armrests lined with leather.
Center armrest were not available from the factory. Those are always aftermarket.
Best,
Achim
(Magdeburg, Germany)