GJ.660/4, 1930 Zeppelin with blue overprint, the complete set of 5 values on a cover sent via Zeppelin to New York on 21/MAY/1930, excellent quality! (Image)

GJ.721A, 1932 18c. Zeppelin in the rare LILAC color + a "normal" set of GJ.720/2 + Congress of Cold Techniques, on a Zeppelin cover sent to Germany on 27/SE/1932, arrival backstamp of Friedrichshafen, etc., very fine quality! (Image)

GJ.1089P, 1957 Letter Week, IMPERFORATE PAIR, mint lightly hinged, excellent quality! (Image)

GJ.1256, pair with VERY SHIFTED PERFORATION in right margin, one stamp without "ARGENTINA", VF! (Image)

RARE UNCATALOGUED PAPER: GJ.1339, 1965 27.50P. Stylized airplane, soft imported unsurfaced paper (normal) and HARD imported unsurfaced p. (rare, not yet catalogued), excellent quality! (Image)

GJ.11C, IN Ps. indigo blue, mint without gum, very good margins, beautiful example of very fine quality! (Image)

GJ.1, with fan "TUCUMÁN FRANCA" cancel (+800%), very fine quality, signed by Alberto Solari on back (Image)

GJ.1, with fancy "CATAMARCA" cancel in semi-circle (+400%), tiny thin on back, excellent front, rare, signed by Alberto Solari (Image)

GJ.1, with ellipse cancel of GUALEGUAYCHÚ (+600%), rare, signed by Alberto Solari on back (Image)

GJ.1, 5c. red, on a front of folded cover sent to Tucumán, with wreathed "SALTA-FRANCA" cancel, very fine quality, signed by Alberto Solari (Image)

GJ.4, yellow-green, type 4, large margins, used with light straightline cancel to be identified, superb! (Image)

GJ.8, dull rose, type 8, pen cancelled, excellent quality! (Image)

GJ.9, purple, type 2, with attractive pen cancel, excellent quality! (Image)

GJ.13, dull rose, type 8, with interesting pen cancel, very fine quality! (Image)

GJ.16, dull rose, type 7, used with a very unusual pen cancel, very fine quality! (Image)

GJ.16, lilac-rose, type 1, with large arch "CORRIENTES" cancel (rare in this period), excellent quality! (Image)

GJ.17, magenta, type 4, mint, superb example, with certificate of Alberto Solari (Image)

GJ.10, 5c. dull rose, without accent, splendid corner block of 4, MNH (+200%, the stamps are MNH, with hinge marks in the sheet margins), with VARIETIES: "spot above the C of REPUBLICA" (position 1) and "white spot below the A of CENTAVOS" (pos.2), excellent! (Image)

ONE OF THE RAREST RETOUCHES of Argentine philately: GJ.80b, 1888 ½c. Urquiza in pair formed by stamps of very different size, the left one with RETOUCH in the "V" of CENTAVO, excellent quality, very few known (the catalog value is very low considering its rarity, it will be corrected in the next edition!) (Image)

RARITY: GJ.96, 1889 ¼c. José M Paz, block of 4 with private impression "LE LOUVRE ROSARIO" (forerunner of PERFIN), mint without gum, one stamp with small fault and the rest of excellent quality. According to the CLM specialized catalog there are 4 examples in existence, I think that there are about 20/25 in total (I have seen this variety in many collections that I have examined), and this is probably the only one in block of 4! (Image)

GJ.109 + 109A + 109B, 1889 8c. Rivadavia in red-rose and dark red-rose (normal) + cerise-carmine + lilac-rose (the latter MNH, +50%), very fine quality! (Image)

GJ.138, 1892 1c. Rivadavia in pair, the left stamp with NOTABLE EXTENSION produced by a perforation flaw, VF! (Image)

GJ.317/8, 1911 Plowman large size, multiple DIE PROOFS, 4 stamps without the value, printed in blue on glazed paper, very fine quality, rare, not catalogued by Victor Kneitschel! (Image)

RARE CANCEL: GJ.423, 1917 ½c. San Martín with typographic cancel of newspapers (they were affixed to the page BEFORE it was printed and they were thus cancelled), few known, rare! (Image)

GJ.455CI, 20P. San Martín of 1917 with CENTER INVERTED, pair used on fragment of parcel post cover with declared value, excellent quality, great rariety! (Image)