Estonia / Smiltene stamps 3 kop. with 25 kop. overprint 4-block - sign. K. Kokk

Estonia / Smiltene stamps 3 kop. with 25 kop. overprint 4-block - sign. K. Kokk
Estonia/Smiltene 1919 4-block cat. H/O p.222 25k/3k imperf.-200 pieces of overprint are known ( for normal position of the overprint) sign K.Kokk 2 times as a different position of overprint the normal position of the overprint is from the lower left corner to the upper right Very Rare inverted opt.! Sold as seen, no return.