Its tough for me to get a good pic of the tang stamp, I had to use my jewelers loop on it to get a good look. Its a CASE XX / SS (like Nazi SS) 8 dots which means 1981-1982, they apparently reduced dots every year during the 80's. See this.
https://www.casexx.com/Library/TangStamp.aspWish I had a better camera to show you.
