In 1928 and 1938 Postal Tax stamps were issued by Turkey. The stamps were required on letters and telegraph forms in addition to regular postal fees on certain days each year, with the money used for humanitarian purposes. The stamps show a map of Turkey, and a Red Crescent, the symbol of the Turkish humanitarian organization. The design is the same for all the stamps in each set, so only one stamp of each is shown.
     The obvious difference between the two designs is that one uses Arabic script while the other uses a Latin alphabet. Until the fall of the Ottoman Empire the Arabic script was used, but after December 31, 1928 it was unlawful to use the Arabic alphabet; a modified Latin alphabet was used.