Russia
Blue Arctic Fox (Alopex lagopus semenovi), Red Wolf (Cuon alpinus), White-faced Dolphin (Lagenorhynchus albirostris), Narwhal (Monodon monoceros)
| Country: | Russia |
| Type: | Postal blocks |
| Series: | Fauna of the Red Book of Russia (2019) |
| Nominal: | 4*50 ₽ |
| Year: | 2019 |
| Size: | 80 x 80 mm |
| Perforation: | frame 11½ x 11¼ |
| Mintage: | 55,000 |