I had several guns refinished by Armoloy back in the late 70s-early 80s. It was popular back then as a way of having the stainless look without searching for the real thing. (One of my favorites was a 2" Model 15, cut to a round butt, and Armoloyed. The double-takes by gun owners were priceless!)
Yours is a very nice example, I hope you'll keep it. If not, let me know by PM.