The Ministerial post office on Corfou. "CENSURE/MILITAIRE SERBE" (M.R.Vukovic study, type XIV) changes from red to black. Cover posted from "MINISTARSKA*?.10.17" with censorship canc. "CENSURE/MILITAIRE SERBE" in red and PS posted from "MINISTARSKA*26.10.17" with censorship canc. "CENSURE/MILITAIRE SERBE" in black. Until late of Octomber only red ink was used.