The Ministerial post office on Corfou. Registered cover fr. with 50c. French stamp (foreign registered letter rate) canc. with linear "POSTES SERBES" and posted from "MINISTARSKA*4.7.17.16" with Serbian censorship "CENSURE/MILITAIRE SERBE" 1n red, arr. GENEVE*1.VIII.17." Registered marking in violet colour.