Folded cover datelined inside (Navarro, 26/AU/1856) sent to Villa Mercedes with the blue marks "MENSAGERIAS ARGENTINAS" (GJ.MSJ 70) and "FRANCA" inside a ribbon (MSJ 76), very well applied, excellent quality, signed by Alberto Solari. The catalog value of these marks is US$500 and 700 respectively! (Image)

Folded cover sent from Pergamino to Buenos Aires on 11/JUN/1857 with the marks "NUEVAs MENSAGERIAS NACIONALES DE MERLINO Y CAMPANELLA" (MSJ126) and "FRANCO" with little mouse eating a pumpkin in double oval (GJ.MSJ127), both in bluish green and very well applied, rare, excellent quality, with Alberto Solari certificate (Image)