GJ.BUE 2, circa 1780, front of folded cover sent to Santiago de Chile, with the black mark "Bs. AIRs." perfectly applied, very fine quality, with Alberto Solari certificate (Image)

Folded cover sent to Santiago del Estero (circa 1846) with red marks "CORDOBA" and "FRNCA" (GJ.CBA 2 and CBA 3), also the hand-written inscription "Viva la Confederación Argentina! - Mueran los salvajes Unitarios!", excellent quality, signed by Alberto Solari (Image)

GJ.MEN 1A, front of folded cover sent to Santiago de Chile (circa 1780) with a spectacular "MENDOSA" mark in black, without frame (GJ.1A), very fine quality, with Alberot Solari certificate (Image)

GJ.MEN 1A + MEN 3, folded cover sent to Santiago de Chile (circa 1780) with the black marks "MENDOSA" and "FRNCA", the latter indicated that the rating was paid, very fine quality, rare, signed by Alberto Solari (Image)

GJ.MEN 2, entire letter sent to Buenos Aires on 23/NO/1818 with the red mark "MENDOSA" perfectly applied and "3" rating in pen, excellent quality, signed by Alberto Solari (Image)

GJ.MEN 2, entire letter sent to Buenos Aires on 30/DE/1817 with the red "MENDOSA" mark perfectly applied and "2½" rating in pen, excellent quality, signed by Alberto Solari. The text of the letter is interesting, of commercial nature, with a commment about "Today arrive from Chile 400 exiles of the most well-off of that kingdom, among them many friars..." (Image)

GJ.MEN 2, entire letter sent to Santiago de Chile on 8/JUN/1812 with the red mark "MENDOSA" perfectly applied and "1½" rating in pen, excellent quality, signed by Alberto Solari (Image)

GJ.MEN 2, front of folded cover sent to Santiago de Chile with the red mark "MENDOSA" perfectly applied, excellent quality, signed by Alberto Solari (Image)

GJ.MEN 2 + MEN 3A, folded cover sent to Santiago de Chile with the red marks "MENDOSA" and "FRNCA" very well applied, excellent quality, signed by Alberto Solari (Image)

GJ.MEN 2, entire letter sent to Buenos Aires on 4/MAR/1809 with the red mark "MENDOSA" perfectly applied and "2" rating in pen, excellent quality, signed by Alberto Solari. (Image)