Entire letter franked with 20 lep. sky-blue canc. "ΦΙΛΙΑΤΡΑ 30 ΜΑΡΤ 63" type II blue-green color. On arrival the stamp canceled with "15" "ΝΑΥΠΛΙΟΝ" type I and "ΝΑΥΠΛΙΟΝ 2 ΑΠΡ" type II on reverse. Very unusual (Hellas 19a)