N.C. Gen. Stat. § 28A-2A-14

All wills which have prior to March 9, 1921, been certified and recorded in the office of the clerk of the superior court of any county, substantially following the provisions of G.S. 28A-2A-13, are hereby validated and approved as to the conveyance and transfer of any title to real estate as contained therein, to the same extent as if said wills had originally been probated and filed in said county, and the clerk of the superior court of said county had had jurisdiction to probate the same, provided the probates and witnesses to the said wills are sufficient and according to law.