The sharpness of the strike on such a large item is exceptional for its time. The rim circle and the centering of the unit for sale are almost perfect : 69.4 x 69.1 cm. It is 4.9 mm thick and weighs 349.49 grams. Tiny hairlines subsequent from handling are inevitable because of the malleability of gold. The coin is signed I.I. and S.A. It could only be used for presentation.
No previous edition is comparable. The 100 ducats coin issued in 1629 for King Ferdinand of Hungary and Bohemia, later the Emperor Ferdinand III, is of similar design with the portrait of the monarch on one side and royal shields on the other.
The coin lists the titles of Sigismund III Vasa as King of Poland and Sweden and Grand Duke of Lithuania, Russia, Prussia, Masuria, Samogitia and Livonia. The king is decorated with the Order of the Golden Fleece as a sign of allegiance to the Habsburgs.
Sigismund was a fervent Catholic born in a Protestant dynasty. He wanted to take over the throne of Sweden which he had lost for that reason in 1599 and was unpopular in Poland. At the beginning of the Thirty Years War, Poland was threatened with an invasion by the Turks but he did not participate directly in the resistance of the Khotyn Fortress in Moldavia against the Ottoman army in 1621. The conjunction of date of the 100 ducats coin with this heroic event is a mere coincidence or an opportunity.
Jacob Jacobson van Emden who signed with his Latinized initials I.I. was since 1616 the mint master in Bydgoszcz (Bromberg). The 100 ducats coin is a demonstration of his know-how which undoubtedly helped him to obtain from 1623 a direct or indirect responsibility over six other royal mints. The initials S.A. designate the engraver Samuel Ammon.
SOLD for $ 1.8M before fees
Exceedingly rare Poland commemorative 100 Dukat (349.49 grams) of Zygmunt III Wasa, celebrating 1621 victory over Ottomans, offered by CNG at 46th New York International Numismatic Convention, 10 January 2018, is one of the largest gold coins ever struck. https://t.co/I1Ad44EOqD pic.twitter.com/90dcByCj9A
— Ancient Nomos (@ANAMCurator) December 8, 2017