Any final judgment rendered in any suit herein authorized, and any final judgment within the purview of sections
744 and
747 of this Appendix, and any arbitration award or settlement had and agreed to under the provisions of section
749 of this Appendix, shall, upon the presentation of a duly authenticated copy thereof, be paid by the proper accounting officers of the United States out of any appropriation or insurance fund or other fund especially available therefor; otherwise there is hereby appropriated, out of any money in the Treasury of the United States not otherwise appropriated, a sum sufficient to pay any such judgment or award or settlement.