Cover posted from "SEAFORD* MAR. 3 1938" to Chalkis. On arrival "ΧΑΛΚΙΣ*15 ΜΑΡ. 38" censored with double-circle exchange control cachet "ΥΠΗΡΕΣΙΑ ΠΡΟΣΤΑΣΙΑΣ ΕΘΝΙΚΟΥ ΝΟΜΙΣΜΑΤΟΣ-ΝΟΜΑΡΧΙΑ ΕΥΒΟΙΑΣ" (type 5, Nr.78) in violet colour and bilingual tape "CONTROLE DU CHANGE" (Nr.57). Cover returned to U.S.A. boxed "ΑΓΝΩΣΤΟΣ/INCONNU".