Genuine

Forgery
Gooding #2F1. Crude lithograph in rose to dark rose on modern white paper. The most distinguishable difference is the "REOS" in "CORREOS" smaller than the other letters, with the first "R" having an extended leg resulting in a wide spacing between the second R.

Bartels #C2.1 and #C3.1

Gooding #2F2. Roughly engraved on thick, very hard buff wove paper. The "0" in "10" almost in perfect oval. The "Cs" larger and almost in perfect form. The hair of Isabella has a shallow curve against the deep curve in the genuine stamp. Color in pale carmine.

Bartels #C2.2 and #C3.2; Earee (Page 207)

Gooding #2F4. Lithographed in yellow orange on medium white wove paper.