5l. Greek PS card franked with additional 5l. litho. posted from "KEPKYPA (ΑΠΟΣΤΟΛΗ) * 7-ΑΠΡ. 16" by a Serbian soldier to Switzerland via Brindisi. Very rare Serbian censorship cachet "PREGLEDALA VOJNA TSENZURA" in violet and transit "MILANO POSTA ESTERA" and Italian censorship cachet.