GJ.6, yellow, type 3, on entire letter sent from MERCEDES to Curuzú Cuatiá on 12/OC/1867, uncancelled, very nice! (Image)

GJ.6, ocher, type 4, franking a front of folded cover sent to Corrientes, with typical pen cancel of Caa Catí, excellent quality, signed by Alberto Solari. (Image)

GJ.7, dark blue, type 6, on folded cover sent from CAA CATÍ to Bella Vista on 24/MAY/1873 with typical pen cancel of origin, very fine quality, with Alberto Solari certificate (Image)

GJ.13T, dull rose, pair with types 8 and 4 forming a tete-beche, with mute "9 diagonal bar" cancel of CORRIENTES (out-of-period use and extremely rare on this stamp), very fine quality, extraordinary piece, with certificate of Alberto Solari (Image)

GJ.16, dull rose, ample margins, with the rare cancel RECEPTORÍA DE MERCEDES in oval (+100%), superb! (Image)