I just pulled mine out of the safe and looked again. The same serial # is on the barrel as well the frame. So mine DID NOT have another 5" barrel put on it. The lettering is exactly centered as doc`s. The muzzel is perfectly crowned, the front sight looks right with the two flush pins.
My letter says it left the factory as a 6 1/2". The big question I guess is, did the 6 1/2" have the lettering on the same place on the barrel as Doc,s 5"s? If not, I am going to reletter it again.