Front cover canc. oval "ΠΡΑΚΤΟΡΕΙΟΝ ΤΗΣ ΕΛΛΗΝΙΚΗΣ ΑΤΜΟΠΛΟΙΑΣ/(ΕΝ ΒΟΛΩ)" to Chalkis. On arrival, fr. with 2x20l. blue and canc. "ΧΑΛΚΙΣ*23.ΣΕΠΤ.64". Both stamps with small faults. (Hellas 19b).