Poland
Danzig. Sigismund II Augustus gold Ducat 1555 MS61 NGC, Fr-2, Kopicki-7377 (R6), Dutkowski-96, Parchimowicz-2691. Obv. Crowned head of King Sigismund II Augustus right. Rev. Crest of the city of Danzig with lion supporters. Bright luster, with only minor marks. Extremely rare in this nice Mint State condition. The only example of this rare Ducat that we have seen.
Estimate: 35000-45000 USD