snoop,
forget the magnet test.
many lower grade stainless steels have magnetic propeties. 405 is a good example.
someones got to sand down a new trim ring and see if a boundry line appears if it is chromed.
yes stainless can be chromed BUT i think it is more expensive and processing than finly polishing 410 stainless.
plus the lower grads stainlesses "Drawer" or metal form easier than the more Nickle content versions. kind of like the weldability diff.
I have both in front of me and say its stamped out stainless and poli`shed to a finish if 75 Ra.
the rtse is dead on the detail is softer or the repro,probably from a worn well used set of dies.
.thats mmy .04 cents