Serial numbers weren't required until 1968. Many pre-68 rifles didn't have them, especially inexpensive 22s and shotguns. It's perfectly legal, if any paperwork is involved "NSN" ( No Serial Number) is used instead.
Back then they still used decent walnut for gunstocks, even on a rifle that cost under 6 bucks.
Last edited by natman; 08/12/22.
