Greece 1868 Stampless cover from Milos to London

Stampless envelope wrtten from the island of Milos addressed to the Austrian Maritime Agency London, routed via Syros with boxed Anglo-French accountancy FR/3f 12c (Van der Linden 1277) with handstamp tax 1/4, routed via France with French entry cachet and London arrival on reverse. Very fine item paying the double letter rate. (pt)    ID: 34069