I'd like to get an older blued 3" K-frame, either in .38 or .357. I see they were made in barrel lengths ranging from snubbie to 6", but I'm under the impression 3 inchers are relatively rare. I know, for instance, a 3" Model 19 is rare, and a 3" Model 65 seems more common (though it's stainless), but generally speaking, how rare are blued 3" K-frames? I've been keeping my eyes open at local pawn shops and gun stores, but only ever see snubbies, 4" & 6". Are older blued 3" K's rare enough that I'd probably end up buying one at an on-line auction if I wanted one? Are some 3" models more or less rare than others?