GJ.1, Un Real M.C. blue, type 1, mint, excellent quality, rare! (Image)

GJ.1, Un Real MC, type 7, with pen cancel, excellent quality! (Image)

GJ.1c, Un Real MC, type 8, with variety TRANSPARENT OILY IMPRESSION, pen cancel, VF! (Image)

GJ.2, provisional, with goose quill stroke through the value, type 2, pen cancelled, excellent quality! (Image)

GJ.3, blue, block with the 8 types, composition 1A (the stamp in position 5 with upward shift, leaving a distance of 5.5 mm between types 1 and 5), mint full original gum (+50%), excellent quality, with Alberto Solari certificate. (Image)

GJ.4, yellow-green, type 7, pen cancelled, excellent quality! (Image)

GJ.6, yellow, type 3, with attractive pen cancel, franking a folded cover sent to Bella Vista, very nice! Signed by Alberto Solari (Image)

GJ.7, dark blue, with VARIETY: completely defective and illegible impression, superb! (Image)

GJ.9, dark rose-lilac, type 7, with 3 strikes of Corrientes datestamp with Maltese cross, VF quality! (Image)

GJ.15, dark lilac, beautiful mint block of 4 with original gum, 2 stamps MNH (+200%) and 2 lightly hinged (+50%), consisting of types 3-4-7-8, very fresh and perfect, superb quality, with Alberto Solari certificate. (Image)

GJ.17, magenta, type 7, mint, ample margins, excellent quality! (Image)

GJ.18, 1879 Timbre Fiscal with signature of Sanchez and pen cancelled, type 4, excellent quality, rare! (Image)

GJ.18, type 4, with HARVEY signature, superb example, rare! (Image)