Netherlands
William III gold Proof 10 Gulden 1875, KM105, PR66 Ultra Cameo NGC. Privy Mark: Broadaxe. A single-year type and apparently incredibly rare in Proof condition with a search yielding no recent similar offerings. Truly exquisite in presentation, and nearing technical perfection, with deeply reflective fields and boldly contrasted devices that are absent of noticeable flaws. The only example seen by NGC and certain to delight the specialist. Krause catalog price(s) for this item: $200 in UNC, $225 in BU.
Estimate: 5000-7000 USD