Entire letter written "Εν Αρτα τήν 10 8βρίου 1856", without Arta postmark, transit "ΒΟΝΙΤΖΑ*18.ΟΚΤΩΒ.1856", arr. "ΠΑΤΡΑΙ*23.ΟΚΤΩΒ.1856". Postage "40" (lepta) as due on arrival. Cachet "ΥΓΕΙΟΝΟΜΕΙΟΝ ΒΟΝΙΤΣΗΣ". ONLY TWO EXAMPLES OF THIS CACHET KNOWN TO EXIST. Very fine and very rare.