GJ.68, 1884 ½c. on 15c. with groundwork of horizontal lines, mint, rare! (Image)

GJ.69a, pair with variety "No line below 1884", very nice! (Image)

GJ.70a, with variety "No line below 1884" and also incomplete overprint, VF! (Image)

GJ.71f, with INVERTED OVERPRINT variety, mint without gum, VF quality, rare! (Image)

GJ.72h, with INVERTED overprint var., mint without gum, VF! (Image)

GJ.74a, with variety "No line below 1884", VF, rare! (Image)

GJ.76n, with INVERTED overprint var., mint lightly hinged, VF! (Image)

GJ.79, 1884 12c. Little Envelope, 3 examples franking a registered cover sent from SAN FERNANDO to Italy on 25/FE/1886, with arrival backstamps, spectacular and rare! (Image)

GJ.94, 1888 Sarmiento 6c., perf 12, mint, VF quality! (Image)

GJ.116, 1889 5P. Lamadrid, used, superb! (Image)

GJ.118, 1889 20P. Brown, used, excellent quality! (Image)

GJ.135a, 1892 2c. Discovery of America, very notable COMPLETE DOUBLE IMPRESSION var. (very shifted between them), mint without gum, very rare! (Image)

GJ.136, 1892 5c. Discovery of America 400 years, 2 DIE ESSAYS of a design with the background with lines (not adopted), printed in dark lilac and dark blue on thin wove paper, excellent quality and rare! ATTENTION: Forgeries of these proofs abound, supposedly made in Germany several decades ago, printed on thin laid (India) paper, easily identifiable by the keen eye! These 2 examples are guaranteed genuine. (Image)

GJ.140A, the rare YELLOW color, mint without gum, VF and very rare! (Image)

GJ.152PH, vertical pair IMPERFORATE BETWEEN, excellent quality, rare! (Image)

GJ.180PH, vertical pair IMPERFORATE BETWEEN, excellent quality, rare! (Image)

GJ.455CI, 1917 20P. San Martín with CENTER INVERTED, mint wth tiny hinge mark, superb, signed by Victor Kneitschel on back. (Image)

GJ.476, ½c. San Martín with SERRA BOND wmk, VF quality! (Image)

GJ.477, 1918 1c. San Martín, block of 8, 5 examples with very notable SERRA BOND watermark (almost complete), MNH (+50%), excellent! (Image)

GJ.480, 1918 1c. San Martín, block of 16 of which 12 have Wheatley Bond watermark (COMPLETE), MNH (+50%, 2 with light hinge mark), premium quality, rare showing the complete watermark! (Image)

GJ.1030 + 1030A + 1031, 1954 Eva Perón, 3 examples on national unsurfaced paper + imported unsurfaced p. with wavy rays watermark + imported unsurfaced p. with straight rays wmk, MNH, superb! (Image)

GJ.1674, 1974 1.20P. Christmas (dove of peace) with DRAMATICALLY SHIFTED COLORS, fantastic! (Image)

GJ.1726B, block of 8 with spectacular END-OF-ROLL variety, excellent quality! (Image)

GJ.1766, 1977 500P. Antarctica WITH Casa de Moneda wmk, MNH, VF quality (Image)

GJ.1831/2, 1978 Merchant ships 200P. + 300P., pair with DRAMATICALLY SHIFTED COLORS, fantastic and very rare! (Image)