| 1986 |
 |
| SG 10 |
| Scott 6 |
| Burrowing Owl |
| 1994 | 1994 | 1994 | 1994 |
 |
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| SG 138 | SG 139 | SG 140 | SG 141 |
| Scott 101 | Scott 102 | Scott 103 | Scott 104 |
| Burrowing Owl | Burrowing Owl | Burrowing Owl | Burrowing Owl |
| 1994 | 1996 | 1997 | 2005 | 2006 |
 |
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 |
| MS | Close Up | |||
| SG 154 | SG 190 | SG 205 | SG 364 | SG 392 |
| Scott B39 | Scott B46 | Scott 150f | Scott 269 | Scott 295 |
| Stylised Owl | Burrowing Owl | Burrowing Owl | Burrowing Owl | Burrowing Owl |
| 2005 |
 |
| SG MS368 |
| Scott 271a |
| Burrowing Owls |
| 2008 | 2008 | 2008 | 2010 |
 |
 |
 |
 |
| SG 421 | SG 422 | SG 423 | SG 498 |
| Scott 324 | Scott 325 | Scott 326 | Scott 370g |
| Burrowing Owl | Burrowing Owl | Burrowing Owl | Burrowing Owl |