1964 Congo, Democratic Republic
1963 Colombia
1968 Liberia
1965 Russia
1966 Brunei
1964 Berlin
1937-38 Grenada
2001 Grenada
1964 Senegal
1988 Marshall Islands
400 postally used US stamps, including airmails!
Less than 60¢ per cover.
Neat variety of cork fancy cancels on early US issues.