GJ.35 + 35A, 1c. Balcarce, purple and violet, used, VF quality, nice cancels! (Image)

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

GJ.36A, 4c. Moreno, redish chesnut, 2 stamps franking a cover (defective) sent from Buenos Aires to Montevideo, rare, good opportunity (Image)

GJ.57/58, ½c. provisional, perforated across the middle, small and large P, used, VF quality (Image)

GJ.59, ½c. provisional, without perforation across the middle, small P, used, VF (Image)

GJ.60, ½c. provisional, without perforation across the middle, large P, used, 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.66, 12c. Little Envelope, greenish blue, perf 14¼, used, VF (Image)

GJ.72, ½ on 15c. provisional, groundwork of crossed lines, carmine overprint, with variety: offset impression of the ovpt on back, used, VF quality (Image)

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

GJ.874P, 20c. Bull, large format, imperforate pair, VF (Image)

20c. Roca (unissued), die proof, second stage (colored background), blue, on glazed paper, VF quality (Image)

GJ.115MU, 1P. San Martín, with MUESTRA ovpt., VF (Image)

GJ.140, 3c. Rivadavia, small sun wmk, perf 11½, with variety: Right frame incomplete, used, with small thin on back, very nice front (Image)

GJ.141, 5c. Rivadavia, perf 11½, variety: Left frame incomplete, used, VF (Image)

1.20P. San Martín (unissued), 7 essays in different colors, printed on German paper with large sun wmk, perf 11½, with gum (one without gum), one with minor defects, the rest of VF quality (Image)

GJ.150MU, 2P. San Martín, small sun wmk, perf 11½, with "MUESTRA" ovpt., VF (Image)

GJ.161, 50c. Belgrano, small sun watermark, perf 12¼, used, VF (Image)

GJ.222, 5c. Seated Liberty, block of 4 with variety: Double horizontal perforation, imperforate at bottom, VF (Image)

GJ.231, 30c. Seated Liberty, proof in bright carmine, large sun wmk, gummed, VF quality (Image)

GJ.235, 1P. Seated Liberty, with numbered sheet margin, used, VF quality (Image)

GJ.236, 5P. Seated Liberty, forged inverted center, very well made, interesting for study (Image)

GJ.237ME, 10P. Seated Liberty, with parcel post cancel, VF (Image)

GJ.273, Port of Rosario, die proof, dark blue, on glazed paper, glued to card, VF (Image)