1879 (12 July) cover franked with Russian 7k Arms issue, showing Odessa return address, stamp tied by Constantinople departure cds and sent to Mytilene, with additional Constantinople in Cyrillic and "Constantinopoli" (24.7), fine usage (Image)

Est.US$250

1880 (18 Feb) cover from Constantinople to Tauris, franked with 7k on 10k provisional handstamp, tied by departure cds, with Tabriz arrival on back, late usage (Image)

Est.US$250

1882 (20 Aug) cover franked with Russian 7k Arms issue, showing Poti return address, stamp tied by oval ROPIT Constantinople datestamp ("G" in "Aug" is inverted), repeated on back, fine cover (Image)

Est.US$250

1882 (10 Jan) cover franked with Russian 7k Arms issue, showing Poti return address, stamp tied by round blue Constantinople Agenstvo (only two digits for year), repeated on back, fine cover (Image)

Est.US$250

1913 (23 Apr) registered cover from Constantinople to London, franked on back with 8x10pa/2k Romanov, fine usage, with arrival pmks (Image)

Est.US$200