A Russian Soviet era military insignia, enameled badge for fighters of the ChON, Forces of Special Purpose, at the district Extraordinary Commission, Uyezdniy Cheka. Saber and rifle in an oak wreath with ChON coat of arms, inscription UChK on the bottom and budenovka hat on top. The All-Russian Extraordinary Commission, abbreviated as VChK or Cheka, was the first of a succession of Soviet secret-police organizations active from 1917 to 1922. Militaria, Awards And Badges, Soviet Historical Collectibles, Insignia.