WWF
- ARMENIA 1996 WWF WILD ANIMALSUS $ 1.00
- KYRGYZSTAN 1994 WWF PanthersUS $ 1.00
- LATVIA 1994 WWF MouseUS $ 1.00
- ESTONIA 1994 WWF SquirrelsUS $ 1.00
- CYPRUS 2003 WWF Bats SPECIMEN OVERPRINTEDUS $ 5.00
- LIBERIA 2020 WWF AnimalsUS $ 6.00
- RUSSIA 1993 WWF PanthersUS $ 1.00
- SOUTH GEORGIA 2017 Penguins WWFUS $ 6.75
- SOUTH GEORGIA 2017 Penguins WWFUS $ 6.75
- TRISTAN DA CUNHA 2017 Penguins WWFUS $ 7.70
- TRISTAN DA CUNHA 2017 Penguins WWFUS $ 7.70
- YUGOSLAVIA 2000 WWF Birds SHEETUS $ 12.00US $ 5.00