GJ.38, 1867/73 5c. Rivadavia with groundwork of crossed lines, beautiful block of 4, mint with full original gum, very light hinge marks, very fresh, left sheet margin with complete printer imprint, excellent! (Image)

GJ.38, 1867/73 5c. Rivadavia with groundwork with crossed lines, block of 4 used in SAN PEDRO, excellent quality! (Image)

GJ.38, 1867/73 5c. Rivadavia with groundwork of crossed lines, 2 stamps franking a folded cover dated 23/AU/1869 sent to Buenos Aires, with double circle cancel of MENDOZA without date, on back there is a transit mark of Rosario, very nice, low start! (Image)

GJ.40 + 41, 1867/73 15c. San Martín, 4 used stamps: groundwork of crossed lines, groundwork of horiz lines, and 2 examples showing progressive wear of the diagonal lines (transition from one to the other), very good lot! (Image)

GJ.43, 1867 60c. Posadas, block of 4 postally used, VF quality, scarce! (Image)

GJ.44, 1867 90c. Saavedra, rare MINT BLOCK OF 4 with full original gum, excellent quality (top stamps lightly hinged, bottom stamps MNH), very rare! (Image)

GJ.49, 1876 Rivadavia 8c. rouletted, BLOCK OF 4 mint without gum, excellent quality, rare! (Image)

GJ.53, 1877 2c. Vicente López, large block of 15 stamps, mint without gum, very fine quality, one of the largest known multiples! (Image)

GJ.55, 1877/87 24c. San Martín, block of 4, mint original gum, minor adherences on back, very fine general quality! (Image)

GJ.55, 1877/87 24c. San Martín, 2 used blocks of 4, blue and dark blue, VF quality! (Image)

GJ.57 + 57d + 57e + 57f + 57g, 1882 5c. small P, album page of an old collection with a block of 4 where the top pair has double perforation across the center, another block with the 4 stamps with double perf, a pair with and without perf, and a single with double perf (one diagonal), very fine general quality, low start (catalog value US$US$152) (Image)

GJ.58, 1882 provisional, large P, block of 6, one with variety "(PR" omitted, very fine quality, rare! (Image)

GJ.59, 1882 ½c. small P, VERY SHIFTED OVERPRINT variety (/2 on the left and 1 in the right border!), excellent and rare, signed by Victor Kneitschel (Image)

GJ.63a, 1882 12c. Little Envelope, variety "2 without serif" + a normal single (total 24c.) franking a cover sent by steamer "Senegal" from Buenos Aires to France on 24/OC/1883, with red octagonal mark of the French Consular agency in Buenos Aires and arrival backstamp, VF! (Image)

GJ.69, 1884 provisional, block of 4 with vermilion overprint, mint without gum, excellent quality! (Image)

GJ.69, with VARIETY: part of the overprint is missing (almost complete, "C / 1884"), small faults, very fine appearance, rare! (Image)

GJ.70, 1884 provisional, block of 4 with carmine-rose overprint, VF quality! (Image)

GJ.71, with variety: "comma after the 1 in the fraction", VF quality! (Image)

GJ.72 + 72A, carmine (normal) and vermilion (rare) overprints, mint with gum, hinged, VF! (Image)

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

GJ.76n, fantastic block of 4 with the overprint INVERTED, mint full original gum, 2 of the stamps with tiny hinge mark and 2 MNH, excellent (with hinge traces in the sheet margin). A block of excellent quality, perfect for the most demanding collector! (Image)

GJ.80, 1888 ½c. Urquiza with VARIETY: "White ball over the left shoulder" (produced by the presence of foreign matter during printing), excellent quality! (Image)

GJ.80, 1888 ½c. Urquiza with VARIETIES: "Double vertical perforation" and "white curved lines across top part of the stamp" (plate flaw?), very fine quality, very interesting! (Image)

GJ.83PV, 1888 3c. Juárez Celman, horizontal pair IMPERFORATE BETWEEN, mint, excellent! (Image)

GJ.84, 1888 5c. Rivadavia (large collar), beautiful mint block of 4 (2 are MNH), one with variety: "white spot at left of the left 5", VF quality! (Image)