Nature Stamp Thematic on WOPA+
Nature
| European Nature Conservation Year |
| Issued: 08.07.1995 |
| ›Latvia |
| Bilhetes Postais Album |
| Issued: 01.01.1995 |
| ›Portugal |
| Bilhetes Postais Album |
| Issued: 01.01.1994 |
| ›Portugal |
| Bilhetes Postais Album |
| Issued: 01.01.1993 |
| ›Portugal |
| First Day Cover Album |
| Issued: 01.01.1992 |
| ›Portugal |
| Bilhetes Postais Album |
| Issued: 01.01.1992 |
| ›Portugal |
| Phila Nippon (catalogue price) |
| Issued: 15.10.1991 |
| ›Gibraltar |
| WWF Endangered Species (catalogue price) |
| Issued: 30.05.1991 |
| ›Gibraltar |