Those look like the ones that Peter showed in the original post on this thread, and that I had in reply #9. Basically correct for a 280SL. They may not have been originally installed on the car, but would have been the OEM replacement in the early 70s. They have only slight differences from the ones Tyler showed that are likely original.
As for getting worked up over original parts, I guess everyone has their own line that they draw about what's important and what's not. Whether it's sufficient for the part to work, vs being original could be applied to other parts, like the gas cap, the mirrors, the radio, the wheels, the engine, etc.