Trim Ring Question....14x7 2nd Design ?????

[CamarosRus]

GM 475020 Gr 5.871 trim Ring This was what Im calling the 2nd design because it has
internal teeth biting the rim, whereas the 1st design had clips grabbing the outer edge of rim.

This was used on mid 70's 14x7 Camaro, Chevelle, Nova and even into the 80's on Buick's
and ?????

I have some NOS examples and Im wanting to know if these were POLISHED STAINLESS or
Chrome Plated Stainless....A small magnet does stick, so does that mean its chrome plating.

These NOS Rings have minor scuffing/marring....Ive already learned there is nothing you can to polish the scratches from chrome ?????