Ottoman Turkey: 1880 (April). Cover to Istanbul franked with 5pi of 1872 and 1pi of 1876 Dulos stamps for six piastres single weight over 200 route hours rate (distance was 346 hours) tied by CĪZRE (vilayet Diyarbakir, A&P type 1, RR) triple box handstamp alongside 21 April Stamboul arrival cds.
