Misdirected mailing, 1914, service R letter from SAN SALVADOR to the United States with arrival Philadelphia with adhesive label with instructions to the customs and costums stamp". Free of Duty" 27.1.14, then but in the faked bag landed and over the Atlantic sent with reverse US sea mail duplex 21.2.22 no. "17" and rare violet registered two ring cancel "U. S. Sea post REG. " 21.2.14, arrival again in USA at the 4.3.14, black two-line cancel "Missent to U. S. Sea P. O. No. 17", as usual small traces