cover 1917 XU5 addressed "Submarine letter, Budapest 72" bearing 1Kr. horizontal strip of three (left stamp with corner defect) and 20f., tied by "FELSÖ LÖVÖ" c.d.s. (1.2) and showing straight line "Tauchboetbrief (error of spelling) nach Bremen" h.s. in red and "BUDAPEST/B.K. 72" arrival c.d.s. adjacent; the XU5 having contained a further envelope to be forwarded to America by submarine mail for which the rate was 3.20K. One of the few such covers recorded from Hungary. Photo