Ottoman Turkey: 1pi of 1917 pictorial on piece struck by ÖMERLİ 1 [also known Ömerkân or Masarti in Mardin] (vilayet Diyarbakir, A&P type 1, RRR) all Arabic datestamp. No cover recorded according to A&P and cancellation wrongly included in vilayet Istanbul. However Ömerli of Istanbul was not listed until mid 1924.
