O) 1995 KIRIBATI, END OF WORLD WAR II, REVERSE OF WAR MEDAL 1939 - 1945,...
O) 1973 GERMANY, NICOLAUS COPERNICUS, HELIOCCENTRIC MODEL, EXHIBITION IN...
O) 1902 PERU, MANCO CAPAC, FOUNDER OF ICA DYNASTY, TOSS AND DATE...
O) 1916 AUSTRIA, AUSTRIAN CROWN 10h, POSTAL STATIONERY UNUSED
O) 1995 ALDERNEY, RETURN OF THE ISLANDERS 1945, STEAMBOAT, MNH
O) 1995 GRENADA AND GRENADINES, SECOND WORLD WAR, - PEACE IN THE...
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