Postal stationery cover 3 Kr. Rose, small size, with plate flaw "head of the 'R' in 'three' broken", with box cancel of 2 lines "CARLSRUHE 2 April " (1868) to Berlin with issue cancel, typical defects from opening the cover, otherwise in good condition, spectacular plate flaw and postal stationery rarity of the first grade, photo expertize Flemming BPP (2001) "the test object is in its original transport state and has the following special feature. . . With this piece I know a total of four copies in public at the moment, very scarce. ", by Michel and Sem unknown!