N.C. Gen. Stat. § 47-103

Any deed conveying or affecting real estate executed prior to January 1, 1932, and ordered registered and recorded in the county in which the land lies prior to said date, from which deed and the acknowledgment and privy examination thereof the seal of the notary public taking the acknowledgment or privy examination of the grantor or grantors thereof was omitted, is hereby declared to be sufficient and valid, and the probate and registration thereof are hereby in all respects validated and confirmed to the same effect as if the seal of said notary was affixed to the acknowledgment or privy examination thereof.