GJ.VIRR 2, front of folded cover sent from Spain to "Don Juan de Balmaceda, oidor decano de la Real Audiencia" in Santiago, with the straightline red mark "ESPAÑA" applied in Buenos Aires, indicating its origin, and "80" rating in pen, excellent quality, rare! (Image)

GJ.BUE 1, front of a folded cover sent to Santiago de Chile (circa 1771), with the black 2-line mark "BVENOS- AYRES." very well applied, along "4" rating in pen, excellent quality, very rare! (Image)

Front of an official folded cover sent to Santiago de Chile (circa 1773), with the mark GJ.BUE 2 perfectly applied in black, excellent quality, rare! (Image)

GJ.BUE 4, front of a folded cover sent to Santiago de Chile (circa 1780), with the red mark "BUENOS AYRES." perfectly applied along "3" (Reales) in pen, excellent quality! (Image)

GJ.BUE 4, front of a folded cover sent to Santiago de Chile (circa 1780), with the red mark "BUENOS AYRES." perfectly applied along "2" (Reales) in pen, excellent quality! (Image)

GJ.BUE15B + BUE16, entire letter datelined Córdoba 9/JA/1858, carried privately to Buenos Aires and distpatched there to San Nicolás, marks in green-blue, with some minor faults but interesting! (Image)

GJ.BUE15C + BUE16, entire letter sent to Córdoba on 21/JUL/1856, with both marks of Buenos Aires in grayish green, VF quality, signed by Alberto Solari (Image)

GJ.CBA 1, front of folded cover sent to Santiago de Chile (circa 1811) to Postmaster Juan Bautista Aeta, with "3" rating in pen and the rare framed straightline CORDOBA mark in black (faint, very little ink), VF quality! (Image)

GJ.CBA 2, entire letter datelined Santiago (del Estero) 19/DE/1848, sent to Buenos Aires with faint red straightline CORDOBA mark, and "6" (Reales) rating in pen, along inscription at top "Viva la Confederacion Argentina". Long and very interesting text! (Image)

GJ.CBA 6, long and interesting entire letter sent to 25 de Mayo (Province of Buenos Aires) on 17/JA/1854, with the red framed semi-circle CORDOBA mark, and "8" rating in pen, very nice, signed by Alberto Solari (Image)

GJ.CBA 6, interesting entire letter sent to 25 de Mayo (Province of Buenos Aires) on 1/SE/1854, with the red framed semi-circle CORDOBA mark very well applied and "8" rating in pen, excellent quality, signed by Alberto Solari (Image)

GJ.CBA 7, long and very interesting entire letter (text with political content) sent to 25 de Mayo on 17/SE/1855, semi-circle CORDOBA - FRANCA mark in GREEN-BLUE, perfect strike, and below "1" rating in pen, very fine quality, signed by Alberto Solari (Image)

GJ.CBA 7, long and very interesting entire letter sent to 25 de Mayo on 1/OC/1855, with the semi-circle CORDOBA - FRANCA mark in bluish green, perfectly applied, "8" rating in pen, very fine quality, signed by Alberto Solari (Image)

GJ.CBA 7A, long and attractive entire letter sent to San Nicolás on 30/MAR/1858, with the black semi-circle CORDOBA - FRANCA mark with "5" rating inscribed inside, very fine quality, signed by Alberto Solari (Image)

GJ.MEN 1A, black straightline "MENDOSA" mark perfectly applied on the front of a folded cover sent to Santiago de Chile (circa 1775), along "2" (Reales) rating in pen, very fine quality, rare! (Image)

GJ.ROS 6B + ROS 9, entire letter sent from Rosario to Córdoba on 2/DE/1862 and forwarded to Río Cuarto, with BLUE mark "CORREO NACIONAL DEL ROSARIO - FRANCA" in double oval, unknown until now in this color, and which will be listed in the next edition of the GJ catalog as GJ.ROS 6B, along double circle datestamp (GJ.ROS 9), both perfectly applied. Excellent quality, until now ONLY PIECE with GJ.ROS 6B, signed by Alberto Solari (Image)

GJ.SGO 1, entire letter dated 13/JUN/1848 sent to Córdoba with the "S.TIAGO LESTERO" (GJ.SGO 1) mark perfectly applied in ORANGE-RED (very rare) and "3½" (Reales) rating in pen, signed by Alberto Solari, excellent quality! (Image)

GJ.SGO 1, entire letter datelined 16/MAR/1849 sent to Buenos Aires with the mark "S.TIAGO LESTERO" (GJ.SGO 1) perfectly applied in blackish red along "4½" (Reales) in pen, signed by Alberto Solari, excellent quality! (Image)

GJ.SGO 1, entire letter dated 9/AP/1849 sent to Buenos Aires with the mark "S.TIAGO LESTERO" (GJ.SGO 1) perfectly applied in rust red, along "4½" (Reales) rating in pen, signed by Alberto Solari, excellent! (Image)

GJ.SGO 1, entire letter datelined 10/JUL/1849 to Buenos Aires with the mark "S.TIAGO LESTERO" (GJ.SGO 1) perfectly applied in YELLOWISH RED (rare, the ink that was originally red was "stretched" with oil due to lack of new supplies, lightening the color) along "5" (Reales) in pen (the rates were increased from 4½ Reales in April to 5 Reales in July), signed by Alberto Solari, excellent quality! (Image)

GJ.SGO 1, entire letter datelined 13/AU/1849 to Buenos Aires with the mark "S.TIAGO LESTERO" (GJ.SGO 1) perfectly applied in red along "5" (Reales) in pen (the rates were increased from 4½ Reales in April to 5R. in July/August), signed by Alberto Solari, with defects but very interesting! (Image)

GJ.SGO 1, entire letter dated 12/OC/1849 sent to Buenos Aires with the mark "S.TIAGO LESTERO" (GJ.SGO 1) perfectly applied in almost invisible YELLOWISH RED (rare, the ink that was originally red was HEAVILY "stretched" with oil due to lack of new supplies of inks, lightening the color dramatically) along "6" (Reales) in pen (the rates were increased from 4½ Reales in April, to 5R. in July and 6R. in October!), signed by Alberto Solari, with minor defects but very interesting piece! (Image)