MEXICO. Empire of Iturbide. 1 Peso, 1823 Issue. P-1a. PMG Gem Uncirculated 65 EPQ.The first catalog number for Mexico once it became independent from Spain. Most of these pieces are cut cancelled so when finding a signed cancellation, collectors rejoice. Excellent embossing and complete originality indicative of the Gem designation.PMG Gem Uncirculated 65 EPQ.