1978 Sweden
1993 Namibia
1958-61 Iraq
1927 Palestine
1939 Lebanon
1958 Somalia
1975 Albania
1983 Saudi Arabia
1977 Mauritius
First commemorative stamps of the 20th century.
Columbus stamp promoted the 1893 Chicago World Columbian Exposition.
A single stamp to cover the one-pound air parcel rate in 1952.