...Discovering this thread.
Hi all
Just from my own experience, when I started reconditionning my car (1990), I wanted chromed hood and fender grilles.
At that time, they were everywhere in Germany (Sima- Power, Wache Autoteile , Rothkegel etc...) I was told then that they were not original, but reconditionned.
I remember Dieter Sigmund (Sima) showing me "faulted" chromed grilles, insisting on the fact that chromed ones were NLA . (The process seemed quite "artisanal").
Concerning the sticker "Folie", it fitted all cars since the beginning, but was often missing when the E9 had to be re-painted.
If you look on the orange books, you'll have 2 P/N for chromed grilles.
I believe the 1st was the satin one (See pic) with chromed side -- like the hood grilles.

Maybe the second ref, concerns this grille I found in a NOS?.
The vertical part is painted black .

Concerning the device to fit them, I had those shown (used for roundels on mine, originally, but not sure they were the correct-original ones).
Moreover, as someone said, you break your grilles pins, trying to get them off, as the core is metallic.
If you don't have anything at hand, even a nut of the belt line moulding bolt will fit..
Sorry for pix, but photobucket did not want to rotate.
Marc.