I am told this is called a "Russian Sneak", it it all russian markings, correct Bayo lug, gas tube angle, etc, but imported thru China.  No Norinco markings anywhere on it, but barrel says IO Monroe, China, so it looks like barrel was replaced in chinese factory?  I don't know, but it's tight, has a great patina, is 1950's vintage, in good condition for it's age and history, this was no safe queen.  Only asking $675 plus shipping, could be worth alot more.  All matching numbers, including original dust cover stamped with Russian Star