Background For The catalogue
        The catalogue is based on The Monografie Československých
          Známek Volume 16, 1 + 2, and Volume 17, 1 + 2.
        
        Die Sonderstempel der Tschechoslowakei von 1919 bis 1939, By Poul Kipp
       
      
        Explanations
        
          Image - Image of the Cancellation type.
          Postal Office - Refers to the official name of the postal office.
          Cancellation color - The offical cancellation type as defined in the monograph.
          Text on stamp - The text on the stamp split by rows. Logo's are excluded in the description.
          Text translation - English translation of the cancellation.
          Official Period Of Usage - The officially registered period the stamp should have been used. Dates are in the format Year-Month-Date
          Dates the stamp is used - Verified dates the cancellation have been used. Dates are in the format Year-Month-Date
          Letter
           - The cancellation has been registered on a letter.
          Cutting
           - The cancellation has been registered on a cutting.
          Collectable
           - The cancellation has been registered on a collecable stamp.