| 1957 | 1957 |
 |
 |
| SG 2070 | SG 2070a |
| Scott 1932 | Scott 1932 |
| Euler Means Owl | Euler Means Owl |
| 1968 |
 |
| Mayan Calendar |
| SG |
| Scott 3497 |
| Stylized Owl |
| 1966 | 1970 | 1979 |
 |
 |
 |
| Close Up | Close Up | |
| SG 3308 | SG 3875 | SG 4925 |
| Scott 3218 | Scott 3786 | Scott 4779 |
| Unidentified Owl | Stylised Owl | Barn Owl |
| 1988 | 1990 | 1990 | 1990 |
 |
 |
 |
 |
| SG 5846 | SG 6117 | SG 6118 | SG 6119 |
| Scott 5641 | Scott 5871 | Scott 5872 | Scott 5873 |
| MS | |||
| Stylised Owl | Snowy Owl | Eagle Owl | Long Eared Owl |
| 1997 |
 |
| Close Up |
| SG 6684 |
| Scott 6394 |
| MS |
| Stylised Owl |
