In all cases where a deed, or other conveyance of land dated prior to the first day of January, 1918, purporting to convey land, wherein the grantor or one of the grantors therein was at the time clerk of the superior court of the county where the land purporting to be conveyed was located, was acknowledged, proof of execution, privy examination of a married woman, and, or, order of registration had and taken before a deputy clerk of the superior court of said county, and the instrument registered upon the order of said deputy clerk of the superior court in the office of the register of deeds of said county, within two years from the date of said instrument, such instrument and its probate are hereby in all respects validated and confirmed; and such instrument, together with such defective acknowledgment, proof of execution, privy examination of a married woman, order of registration, and the certificate of such deputy clerk of the superior court, and the registration thereof, are hereby declared in all respects to be valid and binding upon the parties of such instrument and their privies, and such instrument so probated and recorded together with its certificates may be read in evidence as a muniment of title, for all intents and purposes, in any of the courts of this State. (1939, c. 261.)