Pub. L. 82-183, tit. VI, sec. 610
REVERSIONARY INTERESTS IN CASE OF LIFE INSURANCE.
SEC. 610. REVERSIONARY INTERESTS IN CASE OF LIFE INSURANCE. If refund or credit of any overpayment resulting from the application of section 503 of the Revenue Act of 1950 was prevented on October 25, 1950, by the operation of any law or rule of law (other than section 3760 of the Internal Revenue Code, relating to closing agreements, and other than section 3761 of such code, relating to compromises), refund or credit of such overpayment may, nevertheless, be made or allowed if claim therefor was filed after October 25, 1949, and on or before October 25, 1950.