Russia - 77
77
Russia 1966
Soviet Scientists
Heroes of the Soviet Union (XI)
Alexander Fersman
4k multicolored
March 30, 1966
Mikhail Shatelen
4k multicolored
March 30, 1966
Danylo Zabolotny
4k multicolored
March 30, 1966
Nikolai Kuznetsov
4k green & black
May 9, 1966
Imants Sudmalis
4k brown ochre & black
May 9, 1966
Anna Morozova
4k blue & black
May 9, 1966
Filipp Strelets
4k carmine & black
May 9, 1966
Tikhon Bumashkov
4k bluish violet & black
May 9, 1966