GJ.36, redish dun, very nice (Image)

GJ.37, on fragment, cancelled "Santiago del Estero" for 8/JUL/1870, VF (Image)

GJ.38 x2, on fragment, cancelled "Jujuy" for 3/DE/1870, VF (Image)

GJ.38, tied on fragment by "circle of 8 wedges" of Concordia, along datestamp of 7/JUN/1872, VF (Image)

GJ.38, with ellipse cancel of "Administración de Correos - Pergamino", VF (Image)

GJ.38, on fragment, cancelled "Catamarca" for 18/FE/1870, VF (Image)

GJ.38, with cancel of "CHASCOMÚS" for 18/MAR/1889 (Image)

GJ.38, on fragment, cancelled "Gualeguaychú" for 6/JUL/1872, VF (Image)

GJ.38, on fragment, cancelled "Paso de los Libres" for 17/MAR/1871, VF (Image)

GJ.38, on fragment, cancelled "Tucumán" for 3/SE/1873, VF (Image)

GJ.39, proof in light ocher, printed on thin paper (1958 Kneitschel, volume II, page 688), thin on back, very good front (Image)

GJ.40, proof in blue, printed on thin paper (1958 Kneitschel, volume II, page 688), minor defects, very good front (Image)

GJ.51, very fine (Image)

GJ.57, with VARIETY: offset impression of the overprint on back, light staining (Image)

GJ.58, with VARIETY: shifted ovpt, VF (Image)

GJ.60, marginal block of 8, printer imprint and "3" inverted, light staining (Image)

GJ.61/63, perf 12½, complete set (Image)

GJ.61a, with VARIETY "2 without serif" (Image)

GJ.63, perf 12½, light staining, low start (Image)

GJ.63a, with VARIETY "2 without serif" (Image)

GJ.67, ½c on 15c., groundwork of horiz lines, black ovpt (Image)

GJ.69, 1c on 15c., groundwork of horiz lines, vermilion ovpt (Image)

GJ.69a, 1c on 15c., vermilion ovpt., with VARIETY: no line below "1884" (Image)

GJ.72 + 72A, 3 examples with overprint in carmine, carmine-rose and vermilion, excellent! (Image)

GJ.81, light staining, good front (Image)