Franchise stamp

Franchise stamps are those specific issues allowed to be used only by certain groups including charitable organizations. Stamps are provided by the post office free of charge.

 File:France franchise A.A.webp|France. For use by Spanish Civil War refugees. File:Germany franchise.jpg|Germany. No surprise that the Nazi Party granted itself free postage. File:Spain franchise A.webp|Spain. For use by Diego Castel to promote his postage stamp history book. File:Switz Franch A.webp|Switzerland. The imprinted number indicates who used this stamp. 

Some collectors consider military stamps to be in this category but the armed forces are governmental organizations that are often granted postal powers.