GJ.72k, pair with DOUBLE OVERPRINT variety, excellent quality, very rare, with Alberto Solari certificate (Image)

RARE CANCEL, rare postal stationery: 5c. "Kidd" envelope WITH Spicer Brothers watermark (GJ.SOB-17) + strip of 3 of 1c. Little Envelope of 1884 (GJ.78), sent from SALVADOR MARÍA (province of Buenos Aires) to Mercedes (Corrientes) on 1/DE/1888, several marks on back including "ESTAFETA AMBULANTE F.C.O. Nº16", very interesting! (Image)

GJ.115MU + 116MU + 118MU, the 3 high values of the set with MUESTRA overprint, the first 2 MNH (+50%) and the other one without gum, superb! (Image)

GJ.135, 1892 2c. Discovery of America, block of 6 with DOUBLE PERFORATION between 2nd and 3rd rows, lightly toned gum, very nice and rare! (Image)

GJ.137, 1892 ½c. Rivadavia franking ALONE a newspaper ("Boletín Judicial") sent from La Plata to Tolosa on 14/JUN/1894, with arrival backstamp, very fine quality, very rare!! (Image)

GJ.228, 16c. Seated Liberty, 2 examples franking a registered cover front sent from Mendoza to Estación Maipú on 9/JUN/1905, very interesting! (Image)

GJ.507a, 1920 20c. San Martín with multiple suns wmk, DOUBLE IMPRESSION variety, VF! (Image)

GJ.747CD, 10c. Rivadavia WITH RIGHT LABEL, MNH (+30%), excellent! (Image)

GJ.1044, 80c. Wheat printed on chalky paper, block of 6, the central stamps partially unprinted (without face value!), fantastic! (Image)

GJ.1054, 10P. Cactus, Humahuaca, very rare TRIAL COLOR PROOF in dark green, block of 4 of excellent quality! (Image)

GJ.1142A, 10P. Incan Bridge on glazed paper, block of 8 with notable IRREGULAR PERFORATION variety, gum lightly darkened else excellent, very attractive! (Image)

GJ.1148A, 100P. Skier, block of 4 printed on national unsurfaced paper with spectacular variety: One stamp partially unprinted due to foldover, with that area printed on back, on gum, very fine quality! (Image)

GJ.2018, 1982 Salta 400 years, block of 4 with variety: "Inscriptions, face value and printer imprint OMITTED" due to shifted perforation (in the top stamps), and the bottom stamps with FACE VALUE AT TOP! We also include the lower block of 4 from the same sheet, the top stamps with face value at top and the bottom stamps are much taller and with DOUBLE FACE VALUE!! There is only one sheet of 20 stamps with this variety, the top 5 stamps are the ONLY ONES without face value and ONLY 5 examples have DOUBLE face value, market value US$1000 or more, good opportunity! (Image)

GJ.2452A, 1989 A15 French Revolution printed on UNSURFACED PAPER, VF quality! (Image)

GJ.2704Ba, 1995 75c. Argentine Post logo, self-adhesive stamp of 75c. on white Dover support paper ISSUED IN SHEETS (not booklets), block of 10 stamps (left part of the sheet), very fine quality, catalog value US$1000, low start! (Image)