Entire letter from Bruxelles to Athens, fr. with 5x40c 1858-61 Belgian stamps tied by P24, for a total of 2F (rate of 1/4/58 via France for a letter weight 10gr), "PD" and canc. "BRUXELLES*5.4.60". Transit postmarks "AMB MIDI*5.4.60" and "PARIS*6.AVRIL.60", arr. "ΑΘΗΝΑΙ*31.ΜΑΡΤ.60" (type III) in blue. Very fine and rare.