Entire letter canc. lozenge "1857 ST PETERSBOURG IIII/29" to Athens. Transit postmark "WIEN*13/5", arr. "ΑΘΗΝΑΙ*3.ΜΑΙΟΣ.1857" in blue (type II). Postage markings "9/9=18" (kreuzer) for Austrian route and "1.60" to be paid on arrival.