Issued by the USSR (Union of Soviet Socialist Republics) in 1984, this striking 15-kopeks commemorative honors Yuri Alekseyevich Gagarin, the first human to journey into space. The stamp features a detailed engraved portrait of Gagarin alongside dynamic space imagery symbolizing Soviet achievements in космонавтика (cosmonautics). Elements such as spacecraft, orbital motion, and socialist symbolism highlight the pride of the Soviet space era. This issue reflects Cold War–period scientific prestige and remains highly collectible among Space, Astronomy, and Historical Personality thematic collectors. A classic example of late Soviet engraved design excellence.