Entire letter canc. "ΓΕΝΙΚΟΝ ΤΑΧΥΔΡΟΜΕΙΟΝ ΑΘΗΝΑΙ*20.ΦΕΒΡΟ.1837" to Edinburgh, Scotland. Inscribed "Vapore" (steamer) and "Angleterre via Patras", postmarks "LONDON*30.MAR.1837" and "R MR 30 1837", also in London, and "APR C 1 A 1837". Rate markings "30+10=40" (lepta), 30l. to Patras, 10l. ship letter fee, "50+30=80" (lepta), deleted, "3/3"d, 2/3d packet rate plus inland charges in Britain and "1/2"d the Scottish wheel tax. Very fine and rare.