1980 Swaziland
1992 Latvia
1967 Lesotho
1996 Burkina Faso
1974 Belize
1977 Maldive Islands
1938 Italian East Africa
1974 Togo
1967 Vatican City
1983 Laos
400 postally used US stamps, including airmails!
Less than 60¢ per cover.
Neat variety of cork fancy cancels on early US issues.