This Russian Soviet Federative Socialist Republic (RSFSR) stamp was issued in 1921 during the early Soviet period. It belongs to the "Worker" definitive series, symbolizing the laboring class as the foundation of the new socialist state. The design features the profile of a worker’s head surrounded by ornate Soviet motifs, with the inscription “РСФСР” (RSFSR) at the top. Denominated at 100 Rubles, it reflects the high-inflation era of post-revolutionary Russia. These early Soviet stamps are highly valued by collectors for their historical significance and variations in paper, perforation, and print quality.