SUNSHINE, I've been handleing double rifle for about 60 yrs, and I've never seen a nickel plated double rifle! I'm not saying there has not been one or two, but I do say they are not common if they exist at all.

B.Searcy made an all stainless steel double, rifle with a syntheic stock, for a short time, intended for bear hunting in Alaska's wet climate. It didn't sell well at all, and was discontinued after only a few were made! A couple of these ended up in RSA, and may have been mistaken for nickel plated doubles!