GJ.5A, 2P. indigo blue, beautiful example franking a folded cover dated 6/AU/1858 sent to Buenos Aires, with blue ponchito cancel, worn + "RENTA DE CORREOS - SAN NICOLAS" in double ogive, superb quality, with Alberto Solari certificate (Image)

GJ.12, To Reales blue, beautiful stamp with 3 immense margins (with part of adjacent stamps), very fresh and attractive. Tiny defect on back barely visible, with excellent frent and very nice, good opportunity! (Image)