Military post offices on the Salonica front. Registered cover, Serbian registry mark (used in August 1918), fr. with 3x5c+10c+25c. and posted from "TRESOR ET POSTES*504*5 8 18" with Serbian censorship "PREGLEDALA/VOJNA CENZURA (96)", arr. "WEESEN*2.IX.18". The supply of French labels run out. These Serbian markings were used at V.P.Br.711 and V.P.111. They were left as the official censor markings.