GJ.16g, 1st printing imperforate, thin and ribbed paper, wide margins, very fresh, VF quality! With R. Kneitschel certificate (Image)

GJ.19, 1st printing, with right SHEET MARGIN, excellent quality, very rare! (Image)

EXTREMELY RARE CANCEL: GJ.20, 3rd printing, with stagecoach mail cancel "LA PROTEGIDA AL BRAGADO - RIVADAVIA 305", excellent quality, only 2 covers and this stamp are known with this cancel! (Image)

GJ.20jk, 3rd printing, PAIR OF MULATTOS and also the left stamp with variety "bottom left angle incomplete" (position 19), excellent quality, rare! (Image)

GJ.25h, 4th printing, on RIBBED PAPER (hessian), excellent and rare! (Image)

GJ.25B, 4th printing, CLEAR impression, thin paper, with line watermark below (sheet margin), excellent, rare! (Image)

GJ.27, 6th printing imperforate, rose-red, used in Rosario, very fine quality! (Image)

GJ.27, 6th printing imperforate, rare dark dun color, tinted paper, VF quality, very interesting! (Image)

GJ.27A, 6th printing imperforate, orangish dun-red, superb example! (Image)

GJ.28, 6th printing perforated, absolutely superb! (Image)

GJ.32f, 7th printing imperforate, DIRTY PLATE variety, with mute "oval of bars" cancel of GOYA, very fine quality! (Image)