The Ministerial post office on Corfou. Double weight cover fr. with 40c. French stamp (double weight foreign letter rate) canc. with linear "POSTES SERBES" and posted from "MINISTARSKA*28.4.17.17" with Serbian censorship "CENSURE/MILITAIRE SERBE" and French "OUVERTE par lAUTORITE*3??" and tape "CONTROLE POSTAL MILITAIRE", arr. "GENEVE*7 VI 1917".