1935, Mythological set of 9 on 3 registered air covers, all addressed to Vienna, Austria, with depart. canc. "ΑΘΗΝΑΙ/ΣΥΣΤ. ΕΞΩΤΕΡΙΚΟΥ/10.ΧΙ.1923", (error from employee) transit. "ΑΘΗΝΑΙ-ΑΦΙΞΙΣ ΣΥΣΤΗΜ. ΑΕΡΟΠΟΡΙΚΩΣ/10.ΧΙ.35","ΑΘΗΝΑΙ-ΑΠΟΣΤΟΛΗ ΑΕΡΟΠΟΡΙΚΩΣ/10.ΧΙ.35" and arr. "1/1 WIEN 1 /FLUGPOST/12.XI.35". Apparently, the year segment on the depart. canc. device was stuck & it appears wrongly. 3 FDC covers are known with this mistake.(A22/A30).