British Levant: Constantinople: 1867 (Apr. 3) cover to London, franked by Great Britain 1865-67 6d. lilac plate 5 AD, tied by “C” in barred oval, red London Paid datestamp, blue “INSUFFICIENTLY/PREPAID” with “BRITISH POST OFFICE/CONSTANTINOPLE” c.d.s. in blue on the reverse, a few cover faults. Photo. (Image1)

British Levant: Constantinople: 1867 (May 21) incoming envelope franked by Great Britain 1867-80 6d. deep lilac plate 6 GA tied by London duplex, also showing “BRITISH POST OFFICE/CONSTANTINOPLE” c.d.s., unframed “NOT-CALLED-FOR” and framed “UNCLAIMED” both in red, a few cover faults, otherwise fine and scarce. Photo. (Image1)