I recently bought a 6" -2 that looks pretty much like yours. Very clean and still smooth and tight. What a joy to shoot, I love mine. Can't beat the earlier S&W's for fit and finish.
Now I'm looking for a similar model 19, either 4" or 6". Then I will have finally replaced both my earliest revolvers that I foolishly sold off many years ago.
EDIT--Ooops, I knew that didn't sound right. Mine's a -2, not a -3 that I first typed.