(a) [Repealed act Feb. 5, 1948, ch. 46, 62 Stat. 18, formerly set out below.]
“(b) Any Osage Indian having received a certificate of competency under paragraph 7 of section 2 of the Act of June 28, 1906 (34 Stat. 539, 542); section 3 of the Act of March 2, 1929 (45 Stat. 1478, 1480) [amending act Feb. 27, 1925, ch. 359, 43 Stat. 1008, which is set out below]; or the Act of February 5, 1948 (62 Stat. 18) [Act Feb. 5, 1948, ch. 46, 62 Stat. 18], may make application to the Secretary of the Interior to revoke such certificate and the Secretary shall revoke such certificate: Provided, That revocation of any certificate shall not affect the legality of any transactions heretofore made by reason of the issuance of any such certificate. Restrictions against alienation of lands heretofore removed are not reimposed.
“(c) [Amended act Feb. 27, 1925, set out below, act Mar. 2, 1929, ch. 493, § 4, 45 Stat. 1480, and June 24, 1938, ch. 645, §§ 1, 3, 52 Stat. 1034, 1035.