1878/7-Go PCGS MS 62 Mexico 8 Reales Rare Guanajuato Overdate Silver Coin (21120501C)Mint State Uncirculated Mexico silver 8 reales coin. Struck at Guanajuato Mint (Go mint mark), assayer SM. Rare overdate variety: 1878 7. Encapsulated in older PCGS holder, when PCGS was not using Dunnigan catalog numbers & did not note the clear overdate. Certified by PCGS to MS 62, lustrous & reflective surfaces, no regions of gray tone. Dunigan Go59: "This date is somewhat scarce. Normally this coin comes Very Fine, but is available in Extremely