POLAND. Danzig. Ducat, 1659. John Casimir. PCGS MS-62+. Fr-24; H-C-9810 (R4); Kop-7660 (R4). Mintmasters initials are those of Daniel Lesse, who served at the Danzig Mint from 1656-1685. This excessively <strong>RARE</strong> Ducat is the only example to have ever been certified by PCGS or NGC, and is a virtual unknown to the secondary auction market this century outside of one graffitied example from a Polish house. This example is set apart by the strength of luster that gives a glistening sparkle, that is largely uninterrupted by contact. The design elements are well endowed with detail resultant from a strong strike. No waviness is present on the planchet with is a sometimes common occurrence. A piece that deserves a special place in the finest of collections. From the Mark and Lottie Salton Collection.