Mail between Greece and Italy: Cover A: Underpaid letter from Naples 4.3.1871 paid with 20cmi instead of 60cmi marked "Francobollo Insufficiente" the missing amount of 40 cmi was paid with 45l. in Corfu for transport with Italian ship-paid and unpaid letters cost the same. Cover B: Underpaid letter from Catania 27.11.1869 paid with 40cmi instead of 80cmi the missing amount of 40cmi was paid with 45l. in Patras 23.11 transport with French ship, which was more expensive as the Italian. A beautiful and rare duo.