GJ.5, DOS Ps. blue, position 39, fantastic example mint with large part of its original gum (+200%), wide margins, superb, very rare! With Alberto Solari certificate (Image)

GJ.11CBI, IN Ps. indigo blue, pair of one stamp and a half (vertical bisect) on fragment with blue ponchito cancel of San Nicolás, excellent quality, very rare (only 7 pieces are known), with certificate of Victor Kneitschel! (Image)