Alternative method for determining quarters of coverage with respect to wages in period from 1937 to 1950

For purposes of sections 414(a) and 415(d) of this title, an individual shall be deemed to have one quarter of coverage for each $400 of his total wages prior to 1951 (as defined in section 415(d)(1)(C) of this title ), except where such individual is not a fully insured individual on the basis of the number of quarters of coverage so derived plus the number of quarters of coverage derived from the wages and self-employment income credited to such individual for periods after 1950.