Section 1.811-2, except as otherwise provided therein, is applicable only to taxable years beginning after December 31, 1957, and all references to sections of part I, subchapter L, chapter 1 of the Code are to the Internal Revenue Code of 1954, as amended by the Life Insurance Company Income Tax Act of 1959 (73 Stat. 112). [T.D. 6535, 26 FR 534, Jan. 20, 1961]