GJ.216a, block of 4 with INVERTED OVERPRINT variety, very fine quality, very rare! (Image)

GJ.291, block of 4 with complete double circle datestamp of USHUAIA, VF quality, rare! (Image)

GJ.299, 1918 5c. San Martín, block of 4, both right stamps with SERRA BOND wmk, VF, rare! (Image)

GJ.317, block of 4 WITH LABELS AT LEFT, mint without gum, VF and rare! (Image)

GJ.349, block of 4 with Arata control mark in violet, very fine quality! (Image)

GJ.350, block of 4 with complete cancel of HUAYCAMA (Catamarca) in blue, also Arata control mark, rare! (Image)

GJ.351, block of 4 with Arata control mark in rose-red, very fine quality! (Image)

GJ.373, 1917 12c. San Martín with horizontal honeycomb wmk, block of 4 with sheet margin, very rare. With minor faults (a crease and stain spots, which can be cleaned), extremely scarce and missing in most good collections, catalog value US$400 (Image)

GJ.385, corner block of 12 stamps, 6 with W. BOND watermark (the latter are all MNH), also the overprint is very shifted to the left, VF quality, very nice! (Image)

GJ.479, 1922 12c. San Martín with large sun wmk, M.M. overprint, used block of 4, excellent quality, very rare! (Image)

GJ.528/529, 1920 San Martín with multiple suns wmk, perf 13½ x 12½, M.O.P. overprint, the complete set of 2 values in blocks of 4, mint without gum, very rare! (Image)

GJ.544a, block of 4 consisting of 2 vertical pairs WITH AND WITHOUT PERIOD (the top stamps with period), used, rare! (Image)

GJ.686, 1952 10c. Eva Perón, proof in the issued color, block of 9 with HORIZONTAL GUTTER, extremely rare. With the "SERVICIO OFICIAL" overprint shifted and diagonal, and on back it bears a double impression of 20c. definitive stamp, with light wrinkles as usual in lots of this type, very nice and interesting! (Image)

Stockbook with small but interesting stock of used or mint (several are MNH) stamps, very fine quality quailty! (Image)