Mexico
Republic gold 10 Pesos 1879/8 Zs-S, KM413.9, AU details obverse scratched NGC. Zacatecas mint, assayer, "S". The overdate is quite clear. Mintage of the entire date is unknown, but believed to be less than 1,000 pieces. Scratch is noted at upper obverse, yet little wear for this provincial mint. Krause catalog price(s) for this item: $750 in VF, $1400 in EF, $2250 in UNC.
Estimate: 800-1000 USD