French silver keywind pocket watch with alarm Circa 1800

Silver open faced watch with alarm
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A French silver unsigned historical pocket watch with alarm belonged from the general exelmans (1775-1852), circa 1800, silver, open faced with pair cased, key-winding, round-shaped, pocket watch, with alarm à toc (internal graduation with central index; keywinding at 11:30 and key-setting at 2:30) Silver hunting pair cased with inside an old label inscribed “montre / de campagne / Rémi Joseph Isidore / Exelmans”.
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Diameter: 51 mm
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Signed: Probably French
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Exelmans, Rémy Joseph Isidore (1775-1852), 1st Comte (Earl) Exelmans, Maréchal and Pair (Marshal and Peer) of France Volunteer in 1792, General after Eylau (1807), present in Spain (1808), in Russia (1812), he participated in the campaigns of 1813 and 1814. Arrested during the first Restoration he was acquitted by the council of war. On the return from Elba Island, he delivers the last and glorious fight of the “Cents-Jours” campaign at Rocquencourt (July 1st, 1815); the last French victory of the Napoleonic Wars (after Napoleon’s abdication but before the armistice is signed), which will earn him the nickname of “Lion de Rocquencourt”. It was appointed Marshal of France (1851)