O) 1904 CHILE, GUAYAQUIL, SEMINARY PARK, CIRCULATED TO MONTEVIDEO
O) 2009 EL SALVADOR, ASTRONOMY, GALILEO GALILEI. TELESCOPY -OBSERVATORY -SATELLITES-MNH
O) EL SALVADOR, MANUEL JOSE ARCE, OFICIAL OVERPRINTED, SCT O343 2c black, FIRST PRESIDENT, FEDERAL REPUBLIC OF CENTRAL AMERICA, PROCER OF THE INDEPENDENCE OF EL SALVADOR. stripSENT BY MINISTERIUM OF AGRICULTURE, OFFICIAL MINISTERIAL MAIL, CIRCULATED TO USA
O) EL SALVADOR, MARTI INSCRIBED AEREO SCT C143 20c BROWN, SANTA TECLA CANCELLATION, AIRMAIL TO USA
O) EL SALVADOR, SEAL OF PMG, REGISTERED OFFICIAL, CERES REPUBLICA, SCT O309-O310-O311, GERMANY FRANQUED, ARRIVAL HAMBURG, TO GERMANY
O) EL SALVADOR, CONSPIRACY OF 1811, INTERNATIONAL SERVICE, CIRCULATED TO USA