Good rare stamp.
Felix Edmundovich Dzerzhinsky (11 September [O.S. 30 August] 1877 – 20 July 1926), nicknamed "Iron Felix", was a Bolshevik revolutionary and official. Born into Polish nobility, from 1917 until his death in 1926 Dzerzhinsky led the first two Soviet state-security organizations, the Cheka and the OGPU, establishing a secret police for the post-revolutionary Soviet regime. He was one of the architects of the Red Terror and decossackization.