20 Lepta 1870 special issue plate reconstruction, all 150 positions complete. Two pos.21 stamps included, one with control mumber "02" with "0" inverted (Kound. 42.6), while the other with control number corrected to "20". Position 1-2 in used pair, all the rest in used singles. Most of the stamps of first choise. Very important and very difficult to be collected, normally it takes years to accumulate. (Hellas 31b+31c+31cNdII).