X | 21c | ltbl | National Institute |
- | 21c | multi | Synagogue of the Canal Zone |
- | 21c | multi | Airmail | — | — |
- | 21c | yelorg |
- | 21c | ultra | UN emblem |
- | 21c | bl |
- | 21c | multi | Airmail |
- | 21c | multi | Fire Brigade Emblem |
- | 21c | viobl & gray | Unisphere |
- | 21c | multi | M. A. Guerrero |