Revised 12/4/2025 General Information[1]: The Polish wz.31 was produced from 1932 to 1939 by three factories which bore large font black ink stamps identifying the manufacturer as follows: Below the manufacturer stamp, the wz.31 helmets have typically had a two-digit serial number used for quality control. Below that there is normally a two-digit number representingContinue reading “Polish wz.31*”