MEXICO. Banco De Guanajuato. 500 Pesos, ND (1900-14). P-S294s. Specimen. PMG Choice Uncirculated 64 EPQ. (M355s). Printed by ABNC. Red specimen overprint, serial numbers and dual punch cancellations. Nearly Gem, and an excellent pairing with the 1000 Pesos Specimen we are also offering from this issuer. PMG Pop 1/1 Finer.