The Ministerial post office on Corfou. Registered cover fr. with 10c+2x50c. French stamps (foreign registered 80-100gr. letter rate) canc. with linear "POSTES SERBES" and posted from "MINISTARSKA*18.5.1917" without censorship indication, arr. "GENEVE*16.VI.17". Many heavy letters were sent by Serbian goverment agencies to France and Switzerland. These were bulky envelopes and packages and usually, battered in mail.