I had some seeds show up on some outdoor Northern Light autos this summer. Very strange because I never found any male pollen sacs. No idea where other pollen might have come from.
In any case I have allowed the seeds to mature, and Ill try to sprout them in the spring. If I get a few more seeds that will be great.
With many strains, if the female stays in flower long enough and doesn't get pollenated, they'll often throw a couple of nanners and self-seed as a "preservation of the species" kinda thing. I used to explain that, like many women, if she goes long enough without getting it, she'll do it herself!
That being said, this self-seeding is very different than a hermie. With hermies, you'll typically get lots of seeds all throughout the buds. On a self-seed, you may come across a few in a grow.
Those self-seeds should be fine to plant, and because it was a female that selfed, the seeds will be female and should be a genetic clone of the mother since all chromosomes came from her. Basically, like a clone in seed form. Which also means, they should be autos!