was changed and the crest of King Ferdinand of Romania added. one above in that it has a 4 digit serial number without the Cyrillic prefix which was numbers were four digit with a zero at the beginning of the number if required. possible that they unique serial number is related to the MO mark, but that is only renumbered to match the barrel. country other than Russia where the meaning of the 'N' was not recognized. before the final serial number was assigned. Soviet rifle, or the inclusion of other import information along with the number.
