Here is my newest addition -- a Model 19-4 6 inch from around 1978. I bought it from a gentleman who had taken it in trade for a high-end 1911, and wasn't a revolver guy. He said he had been told it was unfired, but couldn't swear to it. Upon receiving it, I could tell it had been fired due to a slight bit of flame-cutting under the top strap, but it has been fired very little. As you can see, it also had the dreaded "slight turn line". All the better as I use all my revolvers the way they were intended to be used. 
It has the 3-T's, but I can't tell if the grips are original to the gun or not. They're very nice, but they don't seem to have the typical shellac-type finish as S&W grips of this era.
As usual, I probably overpaid, but I'm pleased with the purchase. It did come with a S&W wood presentation box (which obviously is not original to a Model 19), so that helps somewhat.
I may have to get a letter on this one. Upon removing the grips, there are two hand inscriptions on the grip frame -- looks like they were done with some type of sharp tool. They say "GDC1656" and "65277RDS". A letter may shed some light on what these might mean. If anyone has a thought on what these could mean, please share.
Here's a couple of pics.

It has the 3-T's, but I can't tell if the grips are original to the gun or not. They're very nice, but they don't seem to have the typical shellac-type finish as S&W grips of this era.
As usual, I probably overpaid, but I'm pleased with the purchase. It did come with a S&W wood presentation box (which obviously is not original to a Model 19), so that helps somewhat.
I may have to get a letter on this one. Upon removing the grips, there are two hand inscriptions on the grip frame -- looks like they were done with some type of sharp tool. They say "GDC1656" and "65277RDS". A letter may shed some light on what these might mean. If anyone has a thought on what these could mean, please share.
Here's a couple of pics.