Manuscript Certificate, signed ‘le comte de Biron’, testifying to a sergeant’s long service and bravery. In French. 2 pp. 8 x 7 inches, in good condition. Paris, 15 December 1736. Louis Antoine de Gontaut-Biron, comte, then duc de Biron (1700–1788) served with distinction under Louis XV, and was made a Marshal of France in 1757.