Netherlands
Willem I gold 10 Gulden 1840, KM56, MS66 NGC, exceptionally sharp design details with full glowing mint brilliance. Highly attractive and rare in this superior grade. Krause catalog price(s) for this item: $275 in VF, $350 in EF, $600 in UNC, $900 in BU.
Estimate: 2500-3000 USD