Tula arsenal is an arrow inside a star. Izhevsk arsenal is an arrow inside a triangle inside a circle. Refurb marks look like this: <> or [\] and ar eusually found on the receiver cover and stock. A series of XXXX's punched over an old serial number on the stock is a dead giveaway of a refurb. Google "yooperj" for everything you need to know about the SKS, no matter where it came from.