My father in laws sks in a Norinco. From L to R it reads: cDP XXXX then 240027XX. It also says that it was imported from Ontario, CA. I tried all of the usual links for info on this gun and am a little stumped b/c I have not seen 4 chinese charaters before. The first three chinese characters are for the model 56 but the last is unknown. He bought this gun in 92 in the original wooden crate.