Technical School me on NOS parts/factory 2nds

I picked up a couple of horn rings for my Ford, whoever was selling them didn't know what they had. I got 2 parts with the Ford tags on them, they had never been on a car. One the finish was damaged in the middle part, so I guess the part got shoved to the back of the inventory due to the defect.

I got a piece of NOS door trim, part of the wrapper was missing, exactly where some rat (4-legged type...) took a crap. Which is quite caustic to a polished stainless steel finish.