The Siberian Tiger

  The Siberian tiger (Panthera tigris altaica), also known as the Amur tiger, is a tiger subspecies inhabiting mainly the Sikhote Alin mountain region with a small population in southwest Primorye Province in the Russian Far East. In 2005, there were 331–393 adult and subadult Amur tigers in this region, with a breeding adult population of about 250 individuals. The population had been stable for more than a decade due to intensive conservation efforts, but partial surveys conducted after 2005 indicate that the Russian tiger population was declining. By 2015, the Siberian tiger population has increased to 480–540 individuals in the Russian Far East, including 100 cubs. A more detailed census revealed a total population of 562 wild Siberian tigers in Russia.

• Original Name: "Амурский тигр"
• Series: Fauna of USSR
• Country: USSR
• Year: 1977-12-16
• Subject: Animals
• Face value: 30 kop
• Number of catalogue Michel: SU 4685
• Printing: Photogravure and Recess

Walrus (Odobenus rosmarus)

  The walrus (Odobenus rosmarus) is a large flippered marine mammal with a discontinuous distribution about the North Pole in the Arctic Ocean and subarctic seas of the Northern Hemisphere. The walrus is the only living species in the family Odobenidae and genus Odobenus. This species is subdivided into three subspecies:[3] the Atlantic walrus (O. r. rosmarus) which lives in the Atlantic Ocean, the Pacific walrus (O. r. divergens) which lives in the Pacific Ocean, and O. r. laptevi, which lives in the Laptev Sea of the Arctic Ocean.

• Original Name: "Морж"
• Series: Fauna of USSR
• Country: USSR
• Year: 1977-12-16
• Subject: Animals
• Face value: 30 kop
• Number of catalogue Michel: SU 4684
• Printing: Photogravure and Recess

Polar Bear

  The polar bear (Ursus maritimus) is a carnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses.

• Original Name: "Белый медведь"
• Series: Fauna of USSR
• Country: USSR
• Year: 1977-12-16
• Subject: Animals
• Face value: 16 kop
• Number of catalogue Michel: SU 4683
• Perforating: comb 11½ x 12
• Printing: Photogravure and Recess
• Size: 52 x 37 mm