cover 1917 XU5 to Chicago (roughly opened at top) bearing 25f. and tied by "FELSÖ LÖVÖ" c.d.s. (16.1), manuscript "Tauchbootbrief" and boxed Hungarian censorship h.s. adjacent as well as "BREMEN 1/T.B./D.O.R." c.d.s. (30.1); reverse with "OPENED UNDER MARTIAL LAW" label. The letter was returned to sender as the submarine mail service had been suspended. Photo