GJ.36, 4c. Moreno, pen cancelled, rare! (Image)

GJ.36, 4c. Moreno, with datestamp of Concepción del Uruguay, VF quality (Image)

GJ.36, 4c. Moreno, 3 stamps and 1 pair, used with different cancels, for example HINOJO and PATAGONES, VF (Image)

GJ.37, 5c. Rivadavia, groundwork of horizontal lines, used, VF quality (Image)

GJ.39 + 39b, 10c. Belgrano, on vertically laid paper, along a normal example, used, superb copies! (Image)

GJ.40, 15c. San Martín, groundwork of crossed lines, pen cancelled, VF (Image)

GJ.44, 90c. Saavedra, with MUESTRA ovpt., VF (Image)

GJ.51, 20c. Vélez Sársfield, rouletted, marginal strip of 3 with "MUESTRA" ovpt., VF (Image)

GJ.55, 24c. San Martín, with MUESTRA ovpt., VF (Image)

GJ.59i, ½c. on 5c. provisional, without perforation across the middle, small P, inverted overprint variety, block of 4, VF (Image)

GJ.60, ½c. on 5c. provisional, without perforation across the middle, large P, variety "P" and "R" of PROVISORIO incomplete, unused, without gum, VF (Image)

GJ.60, ½c. on 5c. provisional, without perforation across the middle, large P, "ROVISORIO)(I" variety, unused, without gum, VF (Image)

GJ.61b, ½c. Little Envelope, marginal block of 4, 2 with variety: 8th pearl at left deformed, VF (Image)

GJ.62, 1c. Little Envelope, perf 12½, VF (Image)

GJ.64PH, 1c. Little Envelope, perf 14¼, block of 4 imperforate horizontally, sheet margin, without gum as all the known examples, VF (Image)

GJ.65 + 66, 12c. Little Envelope, perf 14¼, ultramarine and green-blue, VF (Image)

GJ.65, 12c. Little Envelope, ultramarine, perf 14¼, with cancel of JESÚS MARÍA (Córdoba), VF (Image)

GJ.72h, ½c. on 15c. provisional, inverted overprint var., unused block of 4, without gum, VF (Image)

GJ.75, 1c. on 15c. provisional, vermilion ovpt., variety: Spot at top right, VF (Image)

GJ.76, Cuatro c. on 5c. provisional, shifted overprint var., used, VF (Image)

GJ.77/9, Little Envelope, cmpl. set of 3 values, the 1c. hinged, VF (Image)

GJ.86, 6c. Sarmiento, with small stain in bottom border (Image)

GJ.96, ¼c. Paz, die proofs in green and blue, first stage, printed on thin transparent paper, VF quality (Image)

GJ.96, ¼c. Urquiza, block of 8 franking a cover used in Buenos Aires, with "BUZON 16" mark, VF (Image)

GJ.97, ½c. Urquiza, die proof in orange, third stage (accent on the "E" of TELÉGRAFOS over the ribbon border), printed on thin transparent paper with Maltese cross wmk, VF quality (Image)