| 1978 | 1988 | 1995 |
 |
 |
 |
| Close Up | ||
| SG 280 | SG MS1030 | SG 1939 |
| Scott 276 | Scott 987a | Scott 1741a |
| Copy of Painting | MS | MS |
| Stylised Owl | Stylised Owl | Northern Spotted Owl |
| 1980 |
 |
| SG MS386 |
| Scott 382 |
| Presentation Card |
| Barn Owl |
| 1995 | 1998 | 2001 | ||
|
 |
 |
||
| SG 1949 & 1950 | SG 2668 | SG 3277 | ||
| Scott 1740b & c | Scott 2070c | Scott 2290a | ||
| MS | MS | MS | ||
| Northern Spotted Owls | Stylised Owl | Cuban Pygmy Owl |
| 1997 |
 |
| SG MS2374 |
| Scott 1950 |
| Stylised Owl |