Upon closer examination by enlarging the photos, I see no evidence of flattened round pins or any indication that the gun is refinished other than the outstanding condition that it presents. I think that we collectors see so many abused and finish challenged guns that we begin to question any gun that appears to be too good to be true.
I will say that if the gun IS refinished, then it was an outstanding job and one that did not leave any of the telltale signs of said refinish.
Like Mike, I would add that one to my collection without much hesitation whether it is original or not. It is still an amazing example of what a new S&W looked like coming off the factory floor.