EL cover from Athens to Marthon (France) franked at 1866 convention rate of 70 lep. (for up to 10 gr.) with 40 lep. light mauve on blue, 10 lep. (1868/69) and 20 lep. (1870). Tied by numeral "1" and "ΑΘΗΝΑΙ 5 ΜΑΡΤ. 70" type II, red "PD" and circular "GRECE/MARSEILLE/1 22 MARS 70" (Gregorian calendar) entry marking in red and "MARSEILLE" and "BORDEAUX" transits on back (Hellas 20Ia, 26a, 31c)