Amending Proclamation No. 134, Dated July19, 1949, as Amended By Proclamation No. 151, Dated October 15, 1949, Proclamation No. 199, Dated August 4, 1950, Proclamation No. 304, Dated January 29, 1952, and Proclamation No. 305, Dated March 11, 1952, By Publishing the Latest Values of Certain Foreign Currencies For Purposes of the Assessment and Collection of Customs Duties