The Ministerial Post Office on Corfou. 8H. Austrian PS fr. with 3h. and posted from "BELGRAD" with Austrian triagonal censorship "GEMEINSAMES ZENTR. NACHW. BURO/ZENSUR ABTEILUNG WIEN", via Italy with censorship canc. "CENSURA CORRISPONDENZA PRIGIONIERI DI GUERRA" and "R.R. POSTA COMMISSIONE PRIGIONIERI DI GUERRA", Corfou with censorship canc. "PREGLEDALA/VOJNA CENZURA (1) in black and "VOJNA POSTA Br. 999"*1.5.17" with censorship canc. "PREGLEDALA/VOJNA CENZURA (37)" in violet, arr. "VOJNA POSTA Br.603*2.5.17". The mail was not supposed to be sent from occupied Belgrad to Salonica. Apparently, by error, was sent to Italy then to Corfu and reached the addressee on the Salonica front.