In the recent Fritz Rudolf Künker Auction 279, ended on June 23, 2016 a number of the Netherlands gold ducats was available for bidding. One of them was the Kampen 1659 ducat (Lot 3594). In this condition this coin was of the great rarity.
The coin was sold for 3,690 EUR = $4,203, incl. Buyer’s Premium fee.
You may see this coin here.