Interesting gun. Would you say the finish is factory glass beaded? That would make it a little odd right there. I'm curious because I found another 686-5, 7 shot but with a four inch barrel and it was (what appeared to be) glass beaded from the factory but I wasn't sure since 99% of the 686's I see are standard brushed stainless finish. As the Kernel said, I'd love to find a little more info on this model.

I will also try to get the product code from my 4" to see if they might be the same possibly?

One of the other things I noticed on this gun is that the trigger is exceptionally smooth. I purchased this gun at a gun show so it's possible there are aftermarket springs, etc however I do not see any evidence of that (screws, etc) beyond above average smoothness.