Circular dated postmarks types (CDS  With date belt) 1908-1918
 
     
    s Bilingual  
    s Octagonals  
      s Arabic  
    s Various  
    s Date formats  
         
         
  References:      
   Osmanlı Postaları damgaları- Dr.H.Y.Nuhoğlu-T.Mert 1990  
  Postal cancellations of the Ottoman Empire - John H.Coles & Howard E. Walker