The Serbian Army in North Africa (1916-1918). Registered cover fr. with 2x25c. and posted from "BIZERTE*23.V.18" with censorships "CENSURE MILITAIRESERBE/A" in violet (type XII/A, M.R.Vukovic study page 195) and "OUVERT par lAUTORITE*878" and tape, arr. "LAUSANNE*14.VI.18".