PS from Br.711 with Serbian censorship "(24) PREGLEDALA/VOJNA CENZURA" in black (No.24IV/A, period of use mid April - June 1917), via "VOJNA POSTA*Br.999*14.4.17" and "MARSEILLE ENTRAGIER*6 5 17" where taxed with 2x5c. and French censorship "OUVERT par lAUTORITE MILITAIRE*306" to Geneva. Possibly 1st day of use for Serbian censorship.