GJ.1, Un Real M.C. franking a very long entire letter sent from MERCEDES to Corrientes on 13/DE/1859, with very interesting content about politics. Excellent quality, with Mautalén-Solari certificate, a very attractive letter both from a philatelic and historical perspective! NOTE: Entire letters with Corrientes are very rare, usually only folded covers! (Image)

GJ.12, BRICK RED-rose, absolutely superb, rare! (Image)

GJ.12, BRICK RED-rose, with the extremely rare rectangular datestamp of MBURUCUYÁ, fine example, very attractive! (Image)

GJ.15, dark lilac, with the extremely rare oval "RECEPTORIA DE MERCEDES" cancel in blue, blunt corner else excellent! (Image)

GJ.16, dull rose, used in August 1880, excellent quality! (Image)