Overijssel, United Netherlands, "rider" ducatoon, 1742. KM-80; Dav-1830. 31.71 grams. Bold AU details, slightly off-center strike, minimal surface corrosion, very lightly toned. Recovered from: Hollandia, sunk in 1743 off the Isles of Scilly, southwest of England
Estimate: 200 - 300 USD