cover 1883 (23 Sept.) XU5, with disinfection slit? at right, registered from the Austro-Hungarian Consulate (seal on reverse) to Prague, marked "via Naples", bearing 30c. mauve and 1882 10c. dull mauve sharing legible "S1", showing despatch c.d.s., "R" in circle and, on reverse, Hong Kong and arrival c.d.s. A rare and attractive franking. Photo