Well it is time to fess up...
...there were only two 5" 57s made...Doc44 has the nickel one and the other one he says he just saw a picture of in a magazine. This in not the long lost third one.
Several years ago I bought a very badly abused 1964 6". The gun didn't even look like it had been shot but it had been "rode hard and put up wet" as the cowboys used to say...
The pitting on the end of barrel was very bad and deep.
I happen to know a retired gunsmith who still does a little work for friends just to keep his hand in it. He was trained at the factory on how to build S&Ws back in the 1960s....as you can see from the pic he has the proper tools to put the correct S&W crown on the muzzle. So I asked if he would shorten the barrel to 5" but he had to be able to not only duplicate the crown but reinstall the sight base to the barrel with the two original pins...he said "no problem".
One unforeseen problem when shortening a 6" barrel to 5" when the sight base is attached to the barrel is when the barrel is cut off the slot for the sight key is now exposed on the end of the barrel. He carefully fitted and welded in a blank to fill the slot then crowned the barrel. You have to look to see the seams.
One interesting thing. The 60s vintage guns had more radius from the sides of the barrel to the crown. Although the crown is correct that radius doesn't match the 1964s...but it is almost identical to the 1980 57 I have. If you look at picture #1 you will see the light reflection on the middle gun, the 5", goes in a straight line from the frame to the muzzle. On the two outer guns that are original 64s at the end where the muzzle is the light flares...that is the radius I'm taking about...
On picture #2 you can also see the sight pins in the barrel rib. On the two original guns they are polished flat after installation.
You can also tell how much duller the blue is on the 5" vs. the other two. The reflection of the towel under the barrels in pic #3, the 6" almost looks silver vs the 5" that looks dark gray. He doesn't do high polish blue jobs so maybe one day I'll send it off for something special.
One advantage of having a "fake" 5" is that I can shoot it....anyone who shot Doc44's gun would need to be hung...
Bob