1862-Pi NGC XF Mexico 8 Reales Potosi Mint Pointed 6 Scarce Chopmarked Silver Coin (24040404C)Extremely Fine Mexico silver 8 reales coin. Struck at the Potosi Mint (mint mark Pi), assayer RO. Certified by NGC to XF Details Chopmarked, Cleaned. Variety with 6 in date made from inverted 9, known as pointed 6. Dunigan Pi49: "The two varieties where the 6 was made from an inverted 9 punch ranks as follows: 1862 1 rare and normal date scarce."