Watch List notes:

Willem II Gulden 1846, KM66, Proof 66 PCGS, a stunningly beautiful coin with rich blue-green and magenta patina blanketing flashy mirror surfaces. Extremely rare in Proof, and it is difficult to imagine that any finer examples could exist. Krause catalog price(s) for this item: $70 in VF, $225 in EF, $450 in UNC, $550 in BU.

Estimate: 5000.00-6000.00 USD