375rd Heinrich Köhler auction - Day 1

1867, Entire folded letter from Malta 17.7.1867, endorsed "per Steamer Ada", to Athens 10.7.67 (new style calendar), with boxed entry mark "Yperthalassia" ("from the sea", used at Piraeus) and red crayon "20", paid by Athens consecutive printings 20 lepta on green, tied by "Athens 10.7.67", very unusual & fine