Courbière, Guillaume René Baron de, Prussian. Field Marshal Hugenott. Origin, governor of the fortress of Graudenz, which he was the only Prussian. Fortification until the peace of Tilsit was defended unconquered, later Governor General of West Prussia, Knights of the Black Eagle Order and the Order of Pour le Mérite (1733-1811). Eigh. Signature "de Courbière" on the cut off lower half of an estimate. 1 p. 4to. Mounted on a base sheet. Graudenz (West Prussia) 18.VI.1808. On the lower half of a formerly folio-sized leaf with an estimate for construction work in the fortress of Graudenz in the Kulmer Land. "... The accuracy of the above attack shall be confirmed herewith ...'. Further down, the approval was given some time later, transmitted by the "Königl. Prussia. Artillery and Engineering Department" : "The use of above attack sum of three thousand, four hundred, eight and seventy Rh ... is hereby approved according to Cabinets Ordre of 24th May c. Königsberg den 2nd July 1808." - Signed with 5 signatures of high military, among them the Generalfeldmarschall and great army reformer August Count Neidhardt von Gneisenau (1760-1831). - Included a cut out further signature Courbières, mounted in an extensive handwritten biography of Courbiere, his victories and successes in numerous campaigns and battles of Frederick of the Great and his successors, at the end dated "Graudenz 1874" (4 folio pages, closely described).