It comes to identifying their Russian SKS, it contains vital information such as the factory that built it, the date it was produced, serial numbers. The Albanian SKS is dated using the numbers on the left side of the receiver. Note after the serial number there is a dash and then the last two digits of the year. The Russian SKS's were in actual production from 1949 to 1956 when the. To 1956 Russian Transitional Guns. russian sks serial number dating. The 3 guns that I have seen are not rebuilds since they show no.