GJ.35 + 35A, 1c. Balcarce, purple and violet (with perforation variety), unused, without gum, VF (Image)

GJ.36, 4c. Moreno, VF quality (Image)

GJ.36, 4c. Moreno, VF quality (Image)

GJ.36, 4c. Moreno, block of 4, VF quality (Image)

GJ.37, Rivadavia 5c. with groundwork of horizontal lines, fine quality, rare! (Image)

GJ.38, 5c. Rivadavia, groundwork of crossed lines, unused, without gum, VF (Image)

GJ.39 + 39b, 10c. Belgrano, on normal paper and vertically laid paper, used, VF (Image)

GJ.40 + 41, 15c. San Martín, groundwork of crossed and horizontal lines, used, VF (Image)

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

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

GJ.42, Alvear 30c., very nice stamp, VF quality (Image)

GJ.42, 30c. Alvear, used, VF (Image)

GJ.43, Posadas 60c., printed in New York, very nice stamp, VF quality (Image)

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

GJ.44, Saavedra 90c. regummed (offered without gum), very nice, low start! (Image)

GJ.48, 8c. Rivadavia, rouletted, pair, VF quality (Image)

GJ.51, 20c. Vélez Sarsfield, rouletted, with MUESTRA ovpt., unused, without gum, VF (Image)

GJ.51, 20c. Vélez Sarsfield, rouletted, block of 4, VF quality (Image)

GJ.53 + 53A, 2c. Vicente López, size 19.9 x 24.9 mm and 19.8 x 25.3 mm, unused blocks of 4, without gum, VF (Image)

GJ.54B, 8c. Rivadavia, type II, VF quality (Image)

GJ.55, 24c. San Martín, 2 examples, one with normal groundwork of crossed lines, the other one with diagonal lines almost missing due to plate wear, very interesting (Image)

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

GJ.55, 24c. San Martín, VF quality, signed by Kneitschel on back (Image)

GJ.56, 25c. Alvear, with "MUESTRA" ovpt., VF (Image)

GJ.56, Alvear 25c., with MUESTRA overprint, VF quality (Image)