Large part of a registered double weight cover from "BP.222*30.11.16", fr. with 2x25c+10c+5c French stamps canc. linear "POSTES SERBES" and "TRESOR ET POSTES*504*15.12.16", arr. "WEESEN*2.1.17". Serbian censor cachet (13) (type IV/A) and tape bilingual "Controle Postal Militaire Serbe".