Югославия
The olm or proteus (Proteus anguinus) is an aquatic salamander in the family Proteidae, the only exclusively cave-dwelling chordate species found in Europe. (Postojna Cave, Slovenia)
| Страна: | Югославия |
| Тип: | Почтовые марки |
| Серия: | Fauna (1954) |
| Номинал: | 70 din. |
| Год: | 1954 |
| Материал: | coated with silk fiber |
| Размер: | 26.5 x 36.5 mm |
| Перфорация: | comb 11¾ |
| Тираж: | 100,000 |
Fauna (1954)
 European Ground Squirrel 4 руб |  Eurasian Lynx 8 руб |  Red Deer 14 руб |  Brown Bear |
 Chamois 10 руб |  Great White Pelican 51 руб |  Bearded Vulture |  Ground Beetle 41 руб |
 Cricket 62 руб |  Dalmatian Wall Lizard |  Olm |  Brown Trout 2,700 руб |