I don't recall them ever making a stainless 457. The normal model decoding does not work with this gun. This is a .45 with a 7 round magazine, not an alloy framed (4) .41 Magnum revolver (57).
I believe the comparably sized stainless .45 would be the 4516
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball