GJ.9, 4 rs with genuine ponchito cancel, the chestnut color was chemically altered and changed to red to make it look like GJ.7 (Cuatro Ps), interesting for study, minor defects (Image)

GJ.11, IN Ps, with ponchito cancel, type 18 on Kneitschel´s reconstruction, tiny defect, excellent apperance (Image)

Stamp forgery with defects (Image)