Mine has the number 1. Also #1 on my Russian SKS. I did not know any of this stuff before I started collecting these rifles way back. It was just luck. But, as for collecting the SKS rifles and many other as well, it's a fun journey learning of all these rifles and bayonets and ammunition. We all learn something now and then about small arms here on this forum and elsewhere as well. Once in a while I check in on a couple of other forums but, I favor this one the most.