The extractor configuration is what differentiates the two.
The 39 has a large extractor that serves as its own spring and is retained partly by that intrinsic tension, but mostly by butting up against the safety lever.
The 39-2 has a smaller, more conventional extractor that requires a small coil spring underneath to function and a transverse pin to both hold it in place and serve as a pivot point. Counterintuitively, this latter design was adopted as being supposedly more satisfactory from the standpoint of durability.
If someone is worried about their extractor breaking, I have seen a complete parts kit (everything but the frame) for a Model 39 no dash for a reasonable price.
Thankfully though out of dumb luck we bumped into an ex smith and wesson employee at a local gunshow who just so happened to have a spare pre dash style extractor and its worked perfectly ever since with that part, think we actually picked up a spare just incase as well.
Complete with the extractor? Including grips, too? Tell us more!
That seems to be incredibly good fortune. My understanding is that they've been generally unavailable for quite a few years now.
Are reproductions being made by anyone? It'd be a tough part to replicate, I'd think, as the tempering would have to be just so.
Dick, that looks like a factory adjustable sight model 459, but that sure don't look like the factory sight....what is it?
That sounds like a Millett adjustable, I have never seen one like that, very different and very nice, for sure.....
Good find???????
Serial 13xx