GJ.19, 2nd printing, worn impression, with mute "square of bars" cancel of CORRIENTES, VF! (Image)

GJ.19c, 1st printing, with INVERTED WATERMARK, mint, extremely rare, absolutely superb! (Image)

GJ.19e, 2nd printing, THIN PAPER (90 microns), beautiful strip of 3 (positions 14-15-16) used in Córdoba, superb! (Image)

GJ.19fm, 1st printing, on THIN PAPER and also with DIRTY PLATE variety, with spectacular stagecoach mail cancel "MENSAGERIAS - RIVADAVIA 305" perfectly applied, superb, very rare! (Image)

GJ.20, typical example of 3rd printing with mute cancel of Gualeguay, superb! (Image)

GJ.20, 3rd printing, in rare carminish dun color, excellent! (Image)

GJ.20i, 3rd printing, PAPER DIRTY in both directions ("quadrille") and LARGE FOLD, spectacular, superb and rare! (Image)

GJ.20g+j, 3rd printing, pair of MULATTOS printed on THIN PAPER, used in Mendoza, with line watermark (top sheet border), with thin on back else superb, very good front and fantastic! (Image)

GJ.20jd, 3rd printing, with varieties: Mulatto and horizontally dirty plate, also with line watermark, used in Paso de los Libres, superb copy! (Image)

GJ.20m, 3rd printing, in notable orangish color, with variety "bottom right angle incomplete" (position 48) and also lightly dirty plate (vertically), franking an entire letter sent from Rosario to Tucumán on 31/AU/1865, very fine quality, these varieties are very rare on cover! (Image)

GJ.20, 3rd printing, IMPERFORATE variety (missed the perforating machine), with right sheet margin, rare! (Image)

GJ.21b, 10c. very clear impression, VERY THIN PAPER (rare!!), spectacular used pair, superb and possibly the largest multiple of this variety! (Image)

GJ.23, 10c. worn impression in attractive "neon" bluish green color, mint without gum, VF! (Image)

GJ.23, 10c. worn impression, fantastic mint pair, the right stamp with interesting signs of wear, superb and rare! (Image)

GJ.23, 10c. dull impression, interesting dark green color, used in Buenos Aires, superb! (Image)

GJ.23, 10c. worn impression, dark green, superb! (Image)

GJ.23, 10c. dull impression with white areas due to lack of ink, superb! (Image)

GJ.23, 3 examples with dull, worn and very worn impressions, excellent quality! (Image)

GJ.23, with notable plate wear, very fine quality! (Image)

GJ.23b, 10c. dark bluish green, semi-clear and oily impression, with VARIETY: partial double impression (below), superb! (Image)

GJ.23d, VERY THIN paper (transparent), very rare! (Image)

GJ.24, 15c. dark blue, mint original gum (+50%), very fresh, superb, rare! (Image)

GJ.24c, 15c. worn impression, with INVERTED WATERMARK var. (inverted and reversed), blue OM cancel, superb and rare! (Image)

GJ.24SD, 15c. blue, almost clear impression, IMPERFORATE (it missed the perforating machine), wide margins, light crease, excellent appearance, rare! (Image)

GJ.24A, 15c. worn impression, green-blue, excellent and absolutely superb example! (Image)