Hey all...first post here. I signed up here after finding & reading through this thread while trying to research my latest purchase. I picked this one up last week, and until then I've never seen an SKS without a factory number preceding the serial.
I believe mine is all original (except for the blade bayo which I'm pretty sure needs to be a spike), numbers matching, and it was still slathered in cosmoline when I picked it up. Looking at the wear on it, I don't think this one has been shot much at all, if any. Someone did unfortunately thread the end of the barrel, and the threads are boogered up.
I am curious to the extended mag release, and the double (ambidextrous) safety levers. I've never seen these on an SKS, and I haven't heard of them mentioned in my limited DP/DB searching.
Pics are before cleaning.