For those that seem to be confused about some acronyms...
OEM=Original Equipment Manufacturer. Yes, that means the guys that originally made the part when the car was new. Does not necessarily have to mean in Mercedes packaging; an OEM Bosch starter you get at a foreign auto parts store will be the same unit you get at the dealer in different packaging. So will most Bosch parts; ATE brake parts, etc.
OEM can be confusing; I'd call all Beru and Bosch ballast resistors OEM for example, and NAPA not; but which one actually showed up on the car??
NOS=New Old Stock. Old parts that have been sitting on the shelf somewhere. One of Joe Alexander's friends in Columbus has a warehouse full of NOS Mercedes parts he buys from dealers clearing out inventory.
NIB=New In box.
And, having bought new sunvisors some years ago when they were only expensive and not ridiculously so, I can say with certainty they are not of the highest quality.
Michael Salemi
1969 280SL
Signal Red w/Black Leather
Restored