GJ.1/3, the complete set of 3 values with handstamped MUESTRA overprint, extremely rare. The 15c. value with repaired corner, the other 2 of excellent quality, very few known (1975 Kneitschel catalogue, page 205), with Alberto Solari certificate. (Image)

GJ.1, 5c. small figures, with CATAMARCA cancel, signed by Alberto Solari, some minor defects, rare! (Image)

GJ.1, with blue FRANCA cancel of Paraná in double ogive, wide margins, with a small tear in the lower margin, very nice, signed by Victor Kneitschel on back! (Image)

GJ.1a + 2a + 3a, strips with the 9 types, very fine general quality (2 stamps in the strip of 5c. with minor defects), very nice, catalog value US$217. (Image)

GJ.2, 10c. green, used in Rosario, minor defects, good appearance, signed by Alberto Solari. (Image)

GJ.4, 5c. large figures, used with blue FRANCA cancel of Santa Fe, minor defects visible on back, very good front, rare! (Image)

GJ.4f, 5c. large figures, with "left frame line broken at top" variety, fine quality, rare! (Image)