Netherlands
Willem I gold 5 Gulden 1827-B, KM60, AU50 NGC. Brussels, (B), mint. An admirable example with little wear. So many of these come low grade or damaged, Krause catalog price(s) for this item: $350 in VF, $500 in EF, $900 in UNC, $1100 in BU.
Estimate: 450-550 USD