What type material (metal)

65 Barracuda, automatic console top plate. After considerable rubbing and polishing, I called the chrome shop to see about getting the plate re-chromed. I was asked about what type of material is it made of? I took it for granted that it was ordinary pot metal, (due to appearance and weight) but nay-nay! It has the magnetic properties of stainless steel. (very little to none)
I collected a few shavings with a drill and the magnet would pick up the shavings? Is it made of "pewter?" Are my tail light bezels made of the same stuff?
Norm shifter top plate.jpg