A claim may be favorably considered under section 1645b of this title only if the property right on which it is based was owned, wholly or partially, directly or indirectly, by a national of the United States on the date of loss and only to the extent that the claim has been held by one or more nationals of the United States continuously from the date that the loss occurred until the date of filing with the Commission.
(Mar. 10, 1950, ch. 54, title VII, §704, as added