NETHERLANDS, Kingdom. Trade coinage. Proof AV Ducat (20mm, 3.50 g, 12h). Utrecht mint; muntmeestertekens: seahorse and winged caduceus. Dr. C. Hoitsema, mintmaster. Dated 1920. KM 83.1; Y 15; Schulman 771. In NGC encapsulation graded Proof 66 Cameo WINGS APPROVED. Superb gem proof and the only coin of this date ever graded. Extremely rare in proof.
Purchased from Coin Galleries, October 1982.