GJ.7d + 7b, 5c. WITH accent, dull plate, also with variety "8 cut angles", mint with intact FULL ORIGINAL GUM (+200%), extremely rare in this outstanding quality! (Image)

GJ.8BI, 10c. green, diagonal BISECT used as 5c. in Rosario, on fragment, excellent quality, extremely rare, with Alberto Solari certificate. (Image)

GJ.8B, 10c. dark green, attractive example of very ample margins, spectacular color and very fresh, superb! (Image)

GJ.9, 15c. blue, handsome mint example with tiny pin hole virtually invisible, superb appearance, very fresh, good color! (Image)

GJ.9d, 15c. blue, with plate flaw in the lined background of the bottom left angle (before the retouch), excellent quality, very rare! (Image)

GJ.9A, 15c. INDIGO blue, beautiful example in notable color, VF quality, very scarce! (Image)

GJ.10b, with variety "Dot above the L", on fragment used in Rosario, VF quality! (Image)

GJ.10d, with variety "Accent between the P and the U", rare! (Image)

GJ.10A, 5c. without accent LILAC, very rare used, with tiny thin on back (in the hinge area), very wide margins, fantastic color, superb appearance! (Image)

GJ.12A, 5c. dull plate, red color, superb example! (Image)

GJ.13, 10c. without accent, splendid example with margins so wide that they show almost completely the 4 guide lines between the stamps, extremely rare, possibly the best example in existence! Signed by Victor Kneitschel on back. (Image)

GJ.15a, 5c. narrow C, with variety "Top frame line omitted", superb! (Image)

GJ.15B, narrow C, in the rare orangish brick red color (used in Santa Fe), excellent quality, very scarce! (Image)