King Johann I., round low-cut GS value cancel from U5 with clear K2 "LEIPZIG 19. I.66", 10, Ngr. green on the reverse deposits from outside paper. It is in canceled condition the rarest value cancel this one the old German states have to offer. There isn't a second canceled value cancel or stamp, as a main number with a catalogue value of euro 20.000. which one can offer. The catalogue value of course is only valid for complete GS envelopes, nevertheless of a great rareness. Certificate Rismondo BPP