Registered cover fr. with 20l/25l light blue 1900 Small Hermes Heads surcharges in vertical pair perf 11 1/2 imperforate between canc. "ΝΑΥΠΛΙΟΝ*29.ΙΟΥΝ.1901" (last day of use June 30, 1901), arr. "ΑΘΗΝΑΙ*29.ΙΟΥΝ.1901". Rare. (Hellas 139i).