1977 Burundi
1972 Burundi
1986 St. Vincent
1978 Liechtenstein
1983 Great Britain
1984 Mongolia
1982 Ghana
1982 Bulgaria
1973 Sri Lanka
1922 Armenia
400 postally used US stamps, including airmails!
Less than 60¢ per cover.
Neat variety of cork fancy cancels on early US issues.