1 Rouble Konstantin Ivanov

Konstantin Tsiolkovsky — not Ivanov — is the subject most associated with Soviet commemorative roubles of this period, so "Konstantin Ivanov" here almost certainly refers to the Chuvash poet Konstantin Vasilyevich Ivanov, born 1890, whose centenary this coin marks. Ivanov died at 26, leaving behind a single major work, the epic poem Narspi, which became the cornerstone of Chuvash literary identity. That a nationality of roughly one million people within the RSFSR received a Union-wide commemorative issue in the final year of the Soviet state's existence is itself an unremarkable bureaucratic accident — the 1991 commemorative programme was largely planned years earlier.