7 penny, 10 penny and 20 penny Heuss (III) on fluorescent paper with hand stamp overprint \"cancelled\", from 1958 undertook the German Federal Postal Administration in the post technical central office attempt to the automation of the postal service traffic, these postage stamp were to this with flourine and phospor substances provided, on the stamping machines allocutions, an officially sale resulted not, in perfect condition mint never hinged in the for these pieces normal perforation, always photo expertize H. D. Schlegel BPP, Michel 1.500.- - scarce issue, it become nearly always only the sets with additional phosphor strip offered!