Military post offices on the Salonica front. The Serbian High scool at Volos. Greek 5l. PS fr. with additional 1l/3l. "ΚΠ" Greek stamp and posted from "ΒΟΛΟΣ*?.?.17" with Greek triangl censorship "NO" and Sernian "PREGLEDALA/VOJNA CENZURA (49)", arr. "VOJNA CENZURA*Br.999*16.9.17"