The Ionian Islands (Corfu, Ithaca, Kefalonia, Kythira, Lefkada, Paxi, Zakynthos) are historically linked to Italian rule (well, Venetian, to be precise), and there was a brief moment when the British controlled them (calling them the United States of the Ionian Islands, but really they were a British protectorate, and most of the Britons’ interest was in outdoing the French) but situated as they are all cozied up to Greece, it makes sense for them to become part of Greece (much like most of the Aegean Islands), which they did in 1864 after throwing off the British. The islands were, not surprisingly, occupied by the Italians and then the Germans during WWII, but they are now firmly Greek (with a bit of afternoon tea and cricket thrown in there from those 19th Century British days).
Stamp details: Stamp on top: Issued on: June 15, 1859 From: Corfu, United States of the Ionian Islands MC #2
Middle and bottom left and middle: Issued in: 1941 From: Italian Occupation Zone Unificato #GE S4, AR 47, CO 15, ZN 2
Bottom right: Issued on: October 22, 1943 From: German Occupation Zone Unificato #ZN 4
Recognized as a sovereign state by the UN: No Claimed by: Hellenic Republic Member of the Universal Postal Union: No
