| Estonian Defence League 100 Years |
| Sheetlets |
| ›Estonia |
| Estonian Flag |
| Sheetlets |
| ›Estonia |
| 2018 Lighthouse - Manilaiu |
| Sheetlets |
| ›Estonia |
| Reprint Estonian Flag |
| Sheetlets |
| ›Estonia |
| Classics of Estonian Painting |
| Sheetlets |
| ›Estonia |
| Dictionary of Standard Estonian 100 |
| Sheetlets |
| ›Estonia |
WOPA+ recommended stamp issues
| Madeira Self-Adhesive |
| Issued: 16.01.2018 |
| ›Portugal |
| Year of the Dog 2018 |
| Issued: 16.02.2018 |
| ›Netherlands |
| Birds 2018 |
| Issued: 02.01.2018 |
| ›Norway |
| Experience Nature - Reptiles and Amphibians |
| Issued: 02.01.2018 |
| ›Netherlands |
| Migratory Birds - Cranes |
| Issued: 16.01.2018 |
| ›Romania |
| Works of Nature |
| Issued: 16.01.2018 |
| ›France |