Costa Rica
Republic 1/4 Peso 1850-JB, San Jose mint, KM103, AU58 NGC. An unusually high grade for this type - although this is the most available date by far - showing the faintest of rubbing in the highest points with much mint bloom remaining. While higher graded examples are known to exist, this piece is currently the finest graded by NGC.
Estimate: 600-900 USD