Bob
What I was looking for, would be something resembling a date - stamped
usually a bit higher on the front or rear grip strap. Or, any kind of a
diamond mark.
What you see is entirely normal, and there is no indication that the
service department received the gun. The gun is probably original. What
appears to be there is just the routine assemblers marks.
There is something about the appearance of the cylinder that seems abnormal,
to me. I don't know if its the color, or the near-absence of blue on the
face, or what. The gun may well be 100% original - I don't know.
Everyone else seems to think its the cat meow, so I will have to bow out !
By the way, the B stamped in the extractor housing indicates that the
gun is suppossed to be blue !
Thanks for posting the additional pictures.
Later, Mike Priwer