The early 7.62x39 dummy


Recently I have learned that the some early Russian 7.62х39 dummy cartridges had interesting feature. We know that dummy cartridges usually have changes in geometry that the soldier could identify similar cartridges in the dark. But Russian cartridges had difference. In a cartridge the grain was put. The cartridge turned to a rattle. Now the soldier could identify cartridges in the dark not only feeling them, but also having shaken by a cartridge near an ear. But similar cartridges were made not by all factories and very short time. I have only one such cartridge. Its headstamp “60 < 50 >”. Write please if someone has other headstamps