Two of these fuzes appear to be copies of the Soviet MG N, one with the markings in Latin, the other marked NSO-1. NSO-1 appears to have a factory code of 21, MG N has a code of 132. I'm trying to find out if MG N is the correct designation for each, and what country produced each of them.
The third is a slightly smaller fuze, stamped as M50. Any help is appreciated.
The third is a slightly smaller fuze, stamped as M50. Any help is appreciated.