Here is a new addition to my Thaler collection. Hungary isn’t my normal collecting focus but the large diameter and nice strike were really appealing to me. 

Diameter: 46mmWeight: 28.54 gKörmöcbánya (Kremnitz) mint. Obverse: Laureate, armored, and draped bust right Reversed: Crowned double-headed eagle, holding sword and scepter; crowned and collared coat-of-arms on breast. Huszár 1241; KM 107; Davenport 3198
Ferdinand III was from 1621 Archduke of Austria, King of Hungary from 1625, King of Croatia and Bohemia from 1627, and Holy Roman Emperor from 1637 until his death in 1657. Sounds like he had a lot on his plate.

Ferdinand ascended the throne at the beginning of the last decade of the Thirty Years' War and introduced lenient policies to depart from old ideas of divine rights under his father because he had wished to end the war quickly. As the numerous battles had not resulted in sufficient military containment of the Protestant enemies and confronted with decaying imperial power Ferdinand was compelled to abandon the political stances of his Habsburg predecessors in many respects in order to open the long road towards the much delayed peace treaty. Although his authority among the princes would weaken after the war, in Bohemia, Hungary, and the Austrias, however, Ferdinand's position as sovereign was uncontested.

The Kremnica Mint is a state-owned mint situated in Kremnica, Slovakia. The predecessor of current was established in the Kingdom of Hungary in 1328, and for nearly seven centuries it has continuously been minting coins. 

The first mint mark on coins minted in Kremnica was C for Latin Cremnicium, this was changed to K for Hungarian Körmöcz or German Kremnitz under Sigismund and later K-B (Hungarian Körmöcz-Bánya or German Kremnitz-Bergstadt).

Sources:
wikipedia
European Crowns 1600-1700 by Davenport