1855-Zs PCGS AU 53 Mexico 8 Reales Zacatecas Mint Rare Silver Coin (23061303C)Almost Uncirculated Mexico silver 8 reales coin. Struck at Zacatecas Mint (Zs mint mark), assayer OM. Certified by PCGS to AU 53, Population Census: 2 coins, only 4 higher. Dunigan Zs35: "Scarce. This is one of the surprising 'sneaky scarce' coins that has long been lumped in as a 'common Zacatecas'. It can be very elusive, sometimes the date is softly struck. This date is almost always in low grade like Fine or Very Fine and often with a few tiny