The Ministerial Post Office on Corfou. Double weight registered cover fr. with 15c+50c. French stamps (foreign reg. letter rate) canc. with linear "POSTES SERBES" and posted from "MINISTARSKA*15.6.17-9" (date bar changed to include the hour) with Serbian censorship canc. "GLAVNA/VOJNA POSTA" in black and French censorship "OUVERT par lAUTORITE MILITAIRE*302" and tape "CONTROLE POSTAL MILITAIRE", arr. "GENEVA*12.VII.17".