Military post offices on the Salonica front. PPC fr. with 2x10c+15c. (foreign registered postcard rate) and posted from "TRESOR ET POSTES*502*9 11 16" with Serbian censorship "OUVERT PAR L"AUTORITE/MILITAIRE SERBE" in violet, arr. "ONEBLIA*20.11.16". Although the postage was paid for registry service, there are no markings for such.