NOTE: I have edited this to reflect the addition of “nieun” as suggested by Hans in a post further down. Russ Cornell has a “▲ 58” so now all dates from 1958 to 1970 are covered.
It is well known that North Korea used date codes for a number of years on their 7.62x39 cartridges. The following are, I am relatively certain, the proper sequence of these codes. They are actually the first 11 letters of the Korean alphabet. The question is: What years are represented by the codes. It is probably safe to assume the years are sequential from the date they start. I suggest they start with 1959 and go to 1969. The first non-code dated headstamp I have seen is 1970 (▼ 70). Has anyone seen an earlier non-coded date (Yes-“▲ 58”)? Based on the assumed dates, I have in my collection all of them except 1959,1960 and 1961. If you have any of these, please let me know. BTW, the form used on the headstamps is like that of the first character in the second row of each of the letters. Has anyone seen any North Korean code dated headstamps other than these 11?