1964 Germany
1968 Germany
1990 Germany
1969 Berlin
1965 Germany
1966 Berlin
1959 Germany
1956 Berlin
1967 Germany
1964 Berlin
1969 Germany
1966 Germany
1964-66 Germany
1970 Berlin
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.