The Union of Soviet Socialist Republics was a Marxist–Leninist state on the Eurasian continent that existed between 1922 and 1991. Postage stamp was printed in USSR in 1972. The Treaty on the Creation of the USSR officially created the Union of Soviet Socialist Republics (USSR).
The Treaty along with the Declaration of the Creation of the USSR was approved on December 29, 1922 by a conference of delegations from the Russian SFSR, the Transcaucasian SFSR, the Ukrainian SSR and the Byelorussian SSR.
The inscription at the bottom of the postage stamp: "Да здравствует братская дружба и нерушимое единство народов СССР!" (Long live the fraternal friendship and unshakable unity of the peoples of the USSR!).
- Original Name: "50 лет декларации и договора об образовании СССР"
- Country: USSR
- Year: 1972, 28 oct
- Subject: Anniversary
- Estimated cost: 4 kop. (at the rate of exchange 1972)
- Number of catalogue: 4018-4022 (A1913) (Scott standart postage stamp catalogue, Vol.5, 2012)