How can I tell its a real russian one when I go look at them?
russian SKS will either be a Tula (star with an arrow inside) Izhevsk (circle with triangle and arrow inside) they will be dated from 1949-1956
Yugos are only marked with serial numbers (and the M59/66 has the obvious grenade launcher on it) all are undated
not sure about how those below will be dated if at all
romanian will have a triangle with an arrow (different from the arrow of an izhevsk)
chinese will have chinese characters and possibly a triangle 26 mark
albanian will have an longer stock and handguard that covers the entire gas tube