Ran across something I've never seen. 6 1/2 inch model 29-2 N 481xxx in brushed nickel finish. The frame is perfect but the barrel has a little more sheen than the frame. All numbers match and while I'm no expert it doesn't look like a refinish. All edges are sharp and clean as well as the stamped numbers. It is pinned and recessed. Gun is from a collector who is moving out of the country and I've bought a quality gun already from him, no junk. Is this just a shooter or something more. I have a hold on it till the end of the day. Help solve this mystery, thanks.