Incoming airmailed cover from Lynn Massachusetts to Mytilene Island, Greece with 2-line ‘par AVION / by AIR MAIL’ blue bilingual airmail label in English/French, coded ‘Form 2978’ and 1-line red rubber cachet 'VIA AIR MAIL'. U.S. stamps 30¢ and 3¢ adhesives, cancelled with “LYNN MASS SEP 24” postal mark and killer ‘GPO’.
Arriving in Greece; the cover was backstamped with “ΑΘΗΝΑΙ ? X.40 ΑΠΟΣΤΟΛΗ” [Athens Despatch, ? October 1940] machine postal marking, added by slogan reading “ΑΠΟΓΡΑΦΗ ΠΛΗΘΥΣΜΟΥ” [Population Census] to be forwarded to Mytilene Island, where it passed by the Exchange Control Office there. A special exchange contol from BANK of GREECE handstamp was affixed, ...inside the cover a check of 10 US dollars was found...etc, signed by the parties involved.

Stamped on both sides with “Seated Athena” violet circular double-ring marking texted “ΥΠΗΡΕΣΙΑ ΠΡΟΣΤΑΣΙΑΣ ΕΘΝΙΚΟΥ ΝΟΜΙΣΜΑΤΟΣ * MYΤΙΛΗΝΗΣ” [National Currency Protection Service of Mytilene] in the belt around.

Mytilene’ receiving date stamp on the back applied, 'ΜΥΤΙΛΗΝΗ ΑΦΙΞΙΣ * 10 ΟΚΤ 1940'.