Nice rare stamp.
The October Revolution, officially known as the Great October Socialist Revolution, and commonly referred to as Red October, the October Uprising or the Bolshevik Revolution, was a seizure of state power instrumental in the larger Russian Revolution of 1917. It took place with an armed insurrection in Petrograd traditionally dated to 25 October 1917 (by the Julian or Old Style calendar, which corresponds to 7 November 1917 in the Gregorian or New Style calendar). It followed and capitalized on the February Revolution of the same year, which overthrew the Tsarist autocracy and established a provisional government composed predominantly of former nobles and aristocrats. During this time, urban workers began to organize into councils (Russian: Soviet) wherein revolutionaries criticized the provisional government and its actions. The October Revolution in Petrograd overthrew the provisional government and gave the power to the local soviets dominated by the majority (Russian: Bolshevik) faction of the Russian Social Democratic Labour Party. This immediately initiated the establishment of the Russian Socialist Federative Soviet Republic, the world's first self-proclaimed socialist state. As the revolution was not universally recognized outside of Petrograd there followed the struggles of the Russian Civil War (1917–1922) and the creation of the Soviet Union in 1922.