Two aimail covers posted both 1949 from Chania to Springfield Mass., USA. Postal rate: 1800dr for foreign airmail, 3400dr 2nd weight. Both with "CONTROLE DU CHANGE" different tapes and cachet "ΕΞΗΛΕΓΘΧΗ ΥΠΟ ΤΗΣ ΕΠΙΤΡΟΠΗΣ ΠΡΟΣΤΑΣΙΑΣ ΕΘΝΙΚΟΥ ΧΑΝΙΑ".