The Ministerial Post Office on Corfou. Registerd cover fr. with 15c. cancelled with linear "POSTES SERBES" + 2x25c and posted from "MINISTARSKA*9.4.1917" with Serbian censorship canc. "CENSURE/MILITAIRE SERBE" (type XIII/A, M.R.Vukovic study, page 196) and "PREGLEDALA/VOJNA CENZURA (1)", arr. "GENEVE*26.V.17".