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Number by catalogue: Michel: 4123 Yvert: 3935 Scott: 4084
Perforation type: 11 ½x11 ½
Subject:
4 kopecks. Ernst Krenkel* with station "North Pole-1"** on background
Additional:
*Ernst Teodorovich Krenkel (Russian: Эрнст Теодо́рович Кре́нкель) (December 24 (O.S. December 11), 1903, Tartu – December 8, 1971, Moscow) was a Soviet Arctic explorer, doctor of geographical sciences (1938), and Hero of the Soviet Union (1938).
**About station "North Pole-1" You can read at description of the issue of 1955
70 years since the birth of Ernst Krenkel
USSR 1973.05.20
In issue: Stamp(s): 1
Issued in: sheets of 50 (5*10) stamps