17.12.1857. EL from Kos (Turkey) by private means to Smyrna, handed over to the forwarding agent G. Foscolos who forwarded it to the Greek Post Office & from there by Austrian Lloyd to Syros. Depart. "ΣΜΥΡΝΑ (ΤΟΥΡΚΙΑ)*4.ΙΑΝ.58" plus "Π.Ε.Δ." (Foreign Fee Paid), arr. "ΣΥΡΟΣ*5.ΙΑΝ.58". Pre-paid fee marking on back, manuscript "100" (lepta, Smyrna-Syros = 90l. for a letter up to 10g., Greek inland fee = 10l. for a letter up to 15g.). Very rare.