Ottoman Turkey: 1873 (26 October). Folded complete entire to Istanbul franked with 20pa red-brown and 1pi grey-brown borders postage due issue of 1868 Dulos stamps for 1 1/2pi single weight up to 100 route-hours letter rate (distance was 44 route-hours) tied by triple circle EDIRNE (A&P type 6) handstamp and on reverse EDIRNE – ANDRINOPLE (A&P type 16, R) dispatch and next day Stamboul arrival cds’s. ex. Passer
