Was poking about doing other photos, so here's brand new 16 April 2016 photos of the finish erosion on the Stealth. Still a fantastic foul weather hunting revolver!:
Doesn't seem to have gotten any worse in several years....
Even been drug about enough to get some edge wear. It almost never gets IN a holster, unless there's something to drag out of the woods.
ETA: Oh it was THIS thread that the pics were for....
AS for my SWAG above about sometimes S&W needs to redo the S/N sometimes, look at this example:
And some other fun file marks etc.:
Another PC where the cutter grabbed a bit.
Looks like some Dremel work done before the markings were applied!
Rough file marks (I've seen worse) but they still didn't get the burr at the front of the cutout area.