GJ.BUE 2, front of folded cover with the black mark "Bs.AIRs." perfectly applied, circa 1770, excellent and rare, with Alberto Solari certificate (Image)

Folded cover sent to Metán in 1841, with straightline red "SALTA" mark (GJ.SAL 3) perfectly applied twice + "1" (Real) rating in pen, very fine quality! (Image)

Entire letter dated 20/JA/1825 sent to Buenos Aires with double straightline mark "SALTA" in red (GJ.SAL 3) and "4" (Reales) rating in pen, the text is about the sale of notions, chinchillas and gold deposit, signed by Victor Kneitschel (initials), very nice (Image)

Folded cover dated 27/FE/1854 sent to Sucre, with straightline black "SALTA" mark (GJ.SAL 3A) perfectly applied + "3½" (Reales) rating in pen, very fine quality! (Image)

Hand-made cover sent to Buenos Aires (circa 1795) with the marks "SALTA" (GJ.SAL 1A) in vemilion very well applied, and "3" (Reales) rating in pen, very fine quality (Image)

Entire letter dated 10/OC/1818 sent to Buenos Aires, with red straightline "SALTA" mark (GJ.SAL 3) perfectly applied and "3" (Reales) rating in pen. The text is about a claim for a debt that had already been settled, excellent quality, signed by Victor Kneitschel (initials) over the mark! (Image)