GJ.660/664, 1930 Zeppelin with blue overprint, the complete set of 4 mint values, VF quality! (Image)

GJ.669, 1940 Zeppelin 1.80P. with GREEN overprint, high value of the set, used, superb! (Image)

GJ.5, Dos Ps. blue, with ponchito cancel, very nice! (Image)

GJ.6, Tres Ps. green, POSITION 1 (top left sheet corner), fantastic mint example with immense margins (the top and left margins correspond to the sheet margins), with minor and insignificant faults: very small tear in the bottom border that coincides with a light vertical crease and a very small thin on back, insignificant considering its absolutely clear, fresh and spectacular front and also its dream margins. Clear impression, almost perfect, well defined color (bright green), this is undoubtedly a philatelic gem for experts! With Alberto Solari certificate. (Image)

GJ.9, 4rs. chestnut, beautiful example of 4 ample margins, excellent quality, superb! (Image)

GJ.10, IN Ps. dun, huge margins, with light ponchito cancel in one corner, superb! (Image)

GJ.10B, IN Ps. HAZEL color, spectacular example of very ample margins, with a light thin on back but a superb front, very attractive! (Image)

GJ.13, 4R. green, CLEAR impression, very handsome example in olive green, wide margins and very fresh. It has a pin hole in the face, else superb, low start! (Image)

GJ.16, 4R. dark green, worn impression, dotted cancel, VF quality! (Image)

GJ.17g, with variety "Lower left angle defective", VF quality! (Image)

GJ.17A, 1P. INDIGO blue, very worn impression, VF quality! (Image)

GJ.18, 2P. red, worn impression, very wide margins, superb! (Image)

GJ.21, 1P. rose, semi-clear impression, used, excellent quality! (Image)

GJ.21c, with variety "Frame line defective between the N and C of FRANCO", position 31, VF quality! (Image)

GJ.22, 2P. blue, worn impression, huge margins, with variety "double frame line at top", superb, signed by Victor Kneitschel on back and with his manuscript description of the variety, in pencil! (Image)

GJ.22d, 2P. blue, with very visible Lacroix Freres watermark, wide margins, excellent quality, rare! (Image)

GJ.1d, used with FRANCA cancel of Santa Fe, VF quality, signed by Alberto Solari (Image)

GJ.2, 10c. green, with wreathed SALTA-FRANCA cancel, VF quality, signed by Solari (Image)

GJ.1, 5c. blue, mint original gum, VF! (Image)

GJ.2a, 10c. black, printed on horizontally laid paper, mint, VF quality. Signed by Victor Kneitschel on back and with Alberto Solari certificate (Image)

GJ.2, 1860 provisional with goose quill stroke through the value, used, with light thin on back in the hinge area, almost insignificant given its superb front, with huge margins and light pen cancel, very nice example! (Image)

GJ.3, September 1860, blue, used with mute 16-bar cancel of Corrientes (first period of use), rare, catalog value US$200 (Image)

GJ.4, yellow-green, with DOUBLE cancellation: dotted + CORRIENTES in arch, very fine quality, very rare! (Image)

GJ.5, blue-green, with DOUBLE dotted cancel (one black and the other one blue), very rare, catalog value US$200+ (Image)

GJ.6, light ocher, with barred cancel, VF quality! (Image)