[House of Orange] Willem I, Prince of Orange. Manuscript letter written during the Anglo-Russian invasion of Holland

Dated "October the 6th 1799", signed "Mr. Hereditary Prince of Orange", with his wax seal. Letter contains military instructions for the retreat of the Anglo-Russian army: "Permit the Bearer H.G. Hurnster to pass / free and unmolested to Hoorn and gather / through the advanced Ports of the army, / on service for me, and to repay." 20 x 16 cm.

Previously folded.