The Ministerial Post Office on Corfou. Registered cover fr. with 50c. French stamp, foreign registered rate, posted from "MINISTARSKA*3.5.1917" (probably wrong month, correct 3.2.17) with linear "POSTES SERBES", Serbian censorship canc. "CENSURE/MILITAIRE SERBE" in violet, French censorship "OUVERT par l"AUTORITE MILITAIRE/303" and tape "CONTROLE POSTAL MILITAIRE", arr. "GENEVE*5.III.17".