1937, 10k-80k, 38 mostly mint stamps, including five blocks of four or six (20k folded twice), imperforated 20k is a forgery, 40k is completely all right, one pair imperforated between stamps and fourfantails, several varieties and etc., nice unit, full OG, NH or LH, F/VF (Image)

1937, 10k-80k, imperforated complete set of four, nice margins all around, completely flawless and bright original gum, NH, VF and very rare in such sound condition, P. Buchsbayew certificate (Image)

1937, 40k dark lilac in block of four, used on registered cover from Moscow to Vienna together with eight other commemorative stamps (four on reverse), tied by Moscow ''2.IX.37'' postal marking, arrived in Vienna on September 7, 1937, mostly VF (Image)