Section 1.831-1 is applicable only to taxable years beginning after December 31, 1953, but before January 1, 1963, and ending after August 16, 1954, and all references therein to sections of the Code and regulations are to sections of the Internal Revenue Code of 1954 and the regulations thereunder before amendments. Section 1.831-3 is applicable only to taxable years beginning after December 31, 1962, and all references therein to sections of the Code and regulations are to sections of the Internal Revenue Code of 1954 as amended. Section 1.831-4 is applicable only with respect to the companies described therein, and only with respect to taxable years beginning after December 31, 1961. [T.D. 6681, 28 FR 11128, Oct. 17, 1963]