19-4 was the last p/r model, about 1981, you are correct Blue .45. 19-7 came out about '94, and is just a fine build. It has forged hammer/trigger, fp on the nose, and a pinned cylinder stop, just like all the old-school S&Ws. It was unfortunately after they swapped to rubber grips (if you want some old-school walnut ones for it, check the classifieds you may find that someone has a pair there for sale
).
At $450 and with the box, that is basically a fire-sale price. Grab it or tell me where it is - I've got some poorly-built Model 66-1's, pinned and recessed, I'd like to trade up to a nice, tight, blue 19-5,6 or 7. I've said it before and I'll say it again, as a consideration in purchasing for a gun to use,
Pinned & Recessed is way overblown. Buy the quality of the individual gun, not the reputation of one year or another. The pin was functionally superfluous anyway - the barrels were crush-fit starting shortly after WWII anyway. Eventually getting rid of the pin was long overdue. Starting around 1980 or so, the quality of S&W took a big step for the better as much of the hand finishing was reduced by CNC machining. Tolerances got tighter on the whole. I would much rather, on average, have a 19-5, 19-6, or 19-7 than a 19-3 or 19-4 (in truth, I'd rather have a 19, 19-1, or 19-2 as my top picks, but let's stick with gun since '68 or so to make it simple). Recessed cylinders are kinda neat, but they are not, in and of themselves, a huge deal in my mind. I mean, non-magnums NEVER had them, so what's the big deal? I like counter-bored cylinders, sure, but I'd rather have a well built and finished gun than chase a relatively unimportant feature.