I'd like to ask your opinion on Model 14. How does it compare to Model 19? The look identical and there is very nice example for sale right now. Is Model 14 .38 Special only unlike Model 19 which shots 357 as well?
The two models have more in common than not. They are both "K" size frames, of course. The original "names" of the two models up until 1957, the Model 19 ("Combat Magnum") and the Model 14 ("Target Masterpiece") best reflects their conceptual purposes (combat vs target shooting), though either can perform the intended "role" of the other. Model 14s (or K-38s) were made mostly with 6" long barrels and my guess is that most Model 19s came with 4" long barrels. Finishes and sights were similar, especially on later models, and target hammers and target triggers could be had on both models.
Probably the biggest difference is the one you addressed: the Model 19 is chambered in .357 Magnum (and thus can also shoot any .38 Special cartridge loading) and the Model 14 is chambered in .38 Special only. They are both fabulous revolvers; the likes of which, in terms of finish and workmanship on a factory production handgun, will, unfortunately, not be seen again.