GJ.3, 2c. Vicente López, horizontal overprint, unused, without gum, VF (Image)

GJ.4, 4c. Moreno, unused, without gum, VF (Image)

GJ.4a, 4c. Moreno, variety: Double overprint (overlapping), unused, without gum, VF quality (Image)

GJ.5, 8c. Rivadavia, unused, without gum, VF (Image)

GJ.5, 8c. Rivadavia, used, VF (Image)

GJ.7, 2c. Vicente López, diagonal overprint, used, VF (Image)

GJ.8, 24c. San Martín, unused, "O" of OFICIAL omitted, without gum, VF (Image)

GJ.10, ½c. Little Envelope, VF (Image)

GJ.13a, 1c. Little Envelope, with inverted overprint variety, used strip of 3, VF (Image)

GJ.14c. 2c. Vicente López, variety: Inverted overprint, used, VF (Image)

GJ.18, 10c. Belgrano, used, VF (Image)

GJ.19, 12c. Little Envelope, VF (Image)

GJ.23, 20c. Vélez Sarsfield, unused, without gum, VF (Image)

GJ.25b, 24c. San Martín, with inverted overprint variety, unused, without gum, VF (Image)

No value (thick glazed paper), 5c. (on card), 10c. (2 colors, on card), 30c. (2 colors, on card) and 50c. (on card), trial color proofs, VF quality (Image)

GJ.39 + other values, 1c. perf 11½x12¼, and 2c, 5c, 10c, 30c and 50c. perf 11½, VF (Image)

GJ.39, 30c. Servicio Oficial, used, VF quality (Image)

GJ.39, 30c. Oficial, unused, without gum, VF (Image)

GJ.50 + other values, Ministry of Agriculture, 60 different stamps, VF general quality (Image)

GJ.73, 12c. San Martín, Ministry of Agriculture, with Wheatley Bond wmk, VF (Image)

GJ.81a, 2c. San Martín with period after value, block of 4 with variety: Inverted overprint, unused, stained gum, very good front, very rare! (Image)

GJ.122 + other values, War Ministry, 20 different stamps, VF general quality (Image)

GJ.127, 5c. Plowman, Ministry of War, on German paper with horizontal honeycomb wmk, VF (Image)

GJ.138, 1c. Plowman, Ministry of War, without watermark, VF (Image)

GJ.138, 1c. Plowman, M.G. overprint, without watermark, VF (Image)