Military post offices on the Salonica front. Serbian Patriotic postcards. PPC fr. with 10c. canc. "TRESOR ET POSTES*504*21 2 18" and posted from "VOJNA POSTA*Br.333", via "VOJNA POSTA*Br.999*7.2.18" with Serbian censorship "PREGLEDALA/VOJNA CENZURA (92)" to Weesen.