Thanks for the info. I suppose this gun could have just had chromed parts installed in place of the original case hardened parts. Regarding the appearance, I cannot speak with any authority, just based on what the seller stated, that this was a nickel plated gun. The frame is stamped "MOD. 15.4" but that's really all the info I have on it, other than I got it at a good deal, likely due to the refinish job on it. I'm not all that worried as I was looking for a shooter, not a collector, and my thoughts were that all bets were off regarding any originality to the parts.