GJ.36 + 98A, rare combination of Moreno 4c. + 1c. Velez Sársfield of the Sudamericana issue to pay the 5c. postage of a cover sent from Paraná to Buenos Aires on 14/FE/1891, VF quality! (Image)

GJ.38, on fragment with spectacular rococo cancel of ANDALGALA, excellent and rare, low start! (Image)

GJ.38, on folded cover with GUALEGUAYCHU cancel with Maltese cross of 19/DE/1869, VF quality! (Image)

GJ.84, 1888 Rivadavia 5c. with sheet margin with printer imprint, franking a cover front sent from Buenos Aires to San Juan on 4/AP/1889, VF! (Image)

GJ.97AP, 1889 ½c. Urquiza, IMPERFORATE PAIR, excellent! (Image)

GJ.98P, 1889 1c. Velez Sarsfield, IMPERFORATE PAIR, excellent! (Image)

GJ.99, 1889 1c. Vélez Sársfield with very visible Globes WATERMARK (it covers large part of the stamp), VF quality! (Image)

GJ.102APV, 1889 2c. Derqui, PAIR IMPERFORATE VERTICALLY, excellent! (Image)

GJ.107P, 1889 5c. Rivadavia large head, IMPERFORATE PAIR, MNH (+50%), excellent! (Image)

GJ.110PH, 1889 10c. Avellaneda, vertical PAIR IMPERFORATE BETWEEN, superb! (Image)

GJ.135/6, 1892 Discovery of America 400 years, 3 cmpl. sets franking a registered cover sent from CÓRDOBA to San Nicolás on the first day of issue (12/OC/1892), VF and very attractive! (Image)

GJ.137 + other values, lot of 13 examples with MUESTRA overprint (11 black, 2 red), fine to VF general quality! (Image)

GJ.151, 5P. San Martín, lot of 5 DIE ESSAYS of unadopted designs, excellent quality! (Image)

GJ.167, 5c. Rivadavia with small sun wmk and MIXED PERFORATION 11½x12, block of 4 with variety: DOUBLE horizontal perforation in the center, excellent and very rare! (Image)

GJ.221, 1899 4c. Liberty, PROOF in grayish dun, printed on original paper, with gum and watermarked, very rare, VF quality! (Image)

GJ.307CI, 1910 Centenary of Revolution 12c. Congress, with CENTER INVERTED, proof printed on card, excellent quality, rare! (Image)

GJ.459CD, block of 4 with labels at right, light crease in the right border else excellent, very nice! (Image)

GJ.569EV, 1923 12c. San Martín, horizontal GUTTER PAIR, excellent quality! (Image)

GJ.594, pair with dramatic perforation variety, due to multiple foldovers, VF quality, rare! (Image)

GJ.597EHA, 1924 3c. San Martín w/o period, pair with horizontal fancy gutter, fine quality, rare! (Image)

GJ.599EVv, horizontal GUTTER PAIR, the right stamp with VARIETY: "small diagonal line over the 5", excellent quality, rare! (Image)

GJ.601a, block of 4, the right stamps with DOUBLE IMPRESSION variety, VF quality! (Image)

GJ.601CD, block of 4 WITH LABELS AT RIGHT, mint and of excellent quality (the bottom stamps are MNH), rare! (Image)

GJ.1014, 1952/3 3P. Eva Perón, photographic proof in black glued to thin card and with the signature and manuscript "conforme" of Amadeo Dell´Acqua, Chief of Propaganda. Excellent quality, possibly unique! (Image)

GJ.1050CA, 1954/7 3P. El Nihuil dam, WITH LABEL AT TOP, very scarce! (Image)