PUERTO RICO - SPAIN: 1852, Small envelope with crowned circle "PAID AT SAN JUAN PORTO RICO" and dispatch mark of July 29 1852, to Barcelona, transported in closed mail via St. Thomas to London and from here via France to Spain, prepaid to the Spanish border with "2/1", in Spain charged with additional "10 Rs" and "6 ms" at Barcelona, a special fee charged between 1848 and 1854
