UNITED STATES OF IONIAN ISLANDS 1815-1864. 1838 EL from "Preveza 3 Ottobres 1838", arr. "CORFU*4 OTTOBRE 1838". Rate marks: "Flio 1 1/2" (lettera di foglio 1 1/2) and "4 1/2" (sterling postage rate for letter of 1 1/2 sheets from Preveza to Corfu). Disinfection slits.