Ottoman Turkey: 1873 (October). Cover to Istanbul franked with 1pi irregular perf. of 1870-72 and 2pi perf. 12 ½ of 1873 Dulos stamps for single weight three piasters 101 to 200 route hours (distance was 120) rate tied by triple box KASTAMUNI (A&P type 2) handstamps. Reverse Stamboul arrival cds.
