All sales of land conducted prior to February 10, 1927, under authority of N.C. Gen. Stat. § 28-93, in which the deferred payments were extended over a period longer than two years, are hereby validated. (1917, c. 127, s. 2; C.S., s. 86; 1927, c. 16; 1949, c. 719, s. 3.)