1875, 2 k. black & red on horiz. laid paper showing GROUNDWORK INVERTED, used, fresh and fine. (Acc. to certificate the stamp is reperforated at bottom but this seems to be wrong as this is the normal perf for this issue.) A rare variety of which only 5 copies recorded. Ex. Faberge. (Sc. 26 b ($57,500), Russian cat. €120,000,-; Phil. Foundation cert.).