King of Prussia (born 1712) from 1740 until his death in 1786. His political prowess and enlightened attitudes toward religion, learning, and the humanities earned him the sobriquet ‘Frederick the Great.’ Collection of 15 untranslated LSs, three in German and 12 in French, all signed “Frederic,” or “Federic,” all one page, 7.5 x 9, spanning more than 40 years from 1740 to 1780, and all to his longtime minister and personal advisor Henry IX, Count Reuss de Kostritz (1711–1780). In overall very good to fine condition.
Shortly after ascending the throne in 1740, Frederick attacked Austria and claimed the valuable region of Silesia, an area rich in natural resources and minerals, for the Prussian kingdom. Having just received his law degree and taken his grand tour, Henry IX was living at his mother’s estates there when he made the acquaintance of the newly crowned king. The two began a lifelong correspondence that would eventually lead to Henry’s position as the directing minister, top civil servant, and close personal advisor to Frederick. A remarkable collection, spanning the entirety of Frederick’s glorious reign over Prussia. Pre-certified PSA/DNA and RR Auction COA.
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