Watch List notes:

POLAND, Monarchy. Jan II Kazimierz. 1648-1668. AV 10 Dukaty (47.5mm, 34.81 g, 12h). Gdańsk (Danzig) mint; Gerard Rogge, mintmaster. Dated 1650 G R. IOAN CASIM : D : G : REX POL ET SUEC : M : DUX : L : RUS : PRUS :, crowned, armored, and collared bust right, wearing ruff / REGIA CIVITAS GEDANENSIS FIERI FECIT., view of city of Gdansk (Danzig) with scenes of immediate countryside; above, radiate tetragrammaton with four arms emerging from clouds: arm to left holding olive branch; arm to right holding sword and scales; below, two arms with hands clasped together in prayer; in exergue, royal coat-of-arms with leonine supporters; date and G R (mintmaster's initials) flanking. D&S, Gedanensis, 353; MD D50a; Czapski 1925; Kopicki –; Gumowski –; KM 52; cf. Friedberg 26 (unlisted date). EF, minor scratches and edge marks. Extremely Rare.