1831-Do PCGS VF 30 Mexico 8 Reales Durango Mint Error Silver Coin (24061501C)Very Fine Mexico silver 8 reales coin. Struck at the Durango Mint (mint mark Do), assayer RM. Variety with raised letter B on eagle's right foot. Believed to be the initial of the mint director M. Bras de Fer. Rare mint error with the s in 20 Gs, not engraved as a superscript, but much lower with an underscore below the s. Dunigan Do08: "The 1831 is scarce, but less so than the 1830." Certified by PCGS to VF 30. Well struck for this early First