375rd Heinrich Köhler auction - Day 1

1866, Unpaid letter sheet from French PO Constantinople 26.9.66 via Piraeus to Athens 16.9.66 (new style calendar, type II) with red crayon "50" lepta, paid by Athens consecutive printings 10 l. and 40 l..The mail addressed to Greece from Constantinople (mainly) and Smyrna, is rarely sent via the French or Austrian Post Offices, as the senders preferred the Greek Post Office of these two towns, very fine