There where two types. A stick on from the factory. And a 2 piece from the dealer.. The 2 piece, had a channel that was riveted into the side of the car and the trim slid into it.
Trying to find NOS is near impossible and frankly, I think most people prefer it gone as it gets in the way with waxing.
I've seen some come off nice and easy with minimal fuss while others will take paint with them.
The roll that Kirban sells is close but not exact. I still have a brand new box of the stuff that I purchased years ago but have never used.