NETHERLANDS, Kingdom. William I. 1815-1840. Proof AR Gulden (30mm, 10.04 g, 6h). Utrecht mint; muntmeestertekens: torch and winged caduceus. Y.D.C. Suermondt, mintmaster. Dated 1820. KM 55; Cr 77; Schulman 260. In NGC encapsulation graded Proof 65 WINGS APPROVED. Superb even deep patina over full proof surfaces. Absolute gem. Only proof of this type graded. Extremely rare.
Purchased from Paul Davis, December 1969.