Second king of Prussia and one of the greatest of the 18th century monarchs; an extremely capable soldier who nearly doubled his country’s area by the end of his reign, he also encouraged arts and commerce, and rebuilt the economy after the Seven Years War. DS, in French, signed “Frederic,” one page, 7.5 x 9.5, May 13, 1747. A couple of expected folds and a bit of mild toning, otherwise fine condition. R&R COA.