Union of Soviet Socialist Republics
Сою́з Сове́тских Социалисти́ческих Респу́блик
2nd March 1955
Air mail stamp depicting an Ilyushin II-12 aeroplane over the Taiga
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Catalogue numbers:
Michel SU 1749A
Stamp Number SU C92
Yvert et Tellier SU PA99
Stanley Gibbons SU 1882
AFA number SU 1759
Unificato SU A99
Zagorskiy SU 1714
Soloviev SU 1800