DPRK headstamps


Do we have any idea how the symbols on North Korean headstamps correlate to production dates? My notes indicate that in 1970 they began using the “93” factory code and western years in the headstamps. What about before that? My 7.62x39mm checklist from Russ Cornell has the NK headstamps in some sort of order, but are they in order by year or do we just not know?



In 7.62x25 Tokarev, we have dated NK rounds (<50>)(* 50 *)(v 55), but no ID as to the meaning of the trangles and stars.
Not much help, but that’s all I got.


Could somebody show head stamps of NK 7.62x25 Tokarev rounds?
What case material the NKs had and what projectile types are known?
What calibers were the NKs producing beside 7.62x39, 7.62x25 and 14.5x114?


Only GMCS ball is known, with brass cases and primers, and 3 neck stab crimps. I will try to post the only 3 heastamps known. There must be more, but they have yet to see the light of day.


The US-Army may bring it to them one day.
Thank you, any image would be good.