Watch List notes:

Holland, United Netherlands, "rider" double ducatoon, 1673, rare, NGC XF 45 (extra-thick slab). Dav-4932A; KM-6.1. 63.84 grams. Very thick and heavy coin with rich toning over muted luster, one of just two specimens in NGC census, both at this grade. NGC #4494778-003.

Estimate: $2000-3000