GJ.3, blue, 2 examples on fragments with attractive pen cancels, excellent quality! (Image)

GJ.4, yellow-green, type 3, pen cancelled, VF quality! (Image)

GJ.4, yellow-green, type 5, pen cancelled, excellent! (Image)

GJ.4, yellow-green, type 6, pen cancelled, excellent! (Image)

GJ.4, yellow-green, type 7, faint pen cancel, very fine quality! (Image)

GJ.4, yellow-green, type 8, pen cancelled, very fine quality! (Image)

GJ.4, yellow-green, type 8, tied on small fragment by rimless datestamp of Corrientes (+30%), very fine quality! (Image)

GJ.5, bluish green, with pen cancel of Caa Catí, excellent quality! (Image)

GJ.6, yellow, spectacular MNH block with the 8 types (+200%, only with hinge mark in the top margin not affecting the stamps!), light impression, very neat and clear, light gum (different types of gum were used for this color, from very light as in this block to very dark), excellent! (Image)

GJ.16, 3c. dull rose, complete sheet with 4 groups of 8, composition 2, disposition III. Mint with full original gum (+50%), catalog value US$1,950, very fine quality, rare, with Alberto Solari certificate. (Image)

GJ.17, magenta, used with Corrientes datestamp, excellent quality, rare! (Image)