Probably unique gold hunting cased lever watch Circa 1919

Gold full hunter owned by Ernst von Borsig by IWC
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Probably unique Swiss 14 carat gold hunting cased pocket watch, circa 1919. IWC precision lever movement with fine adjusting device and minute wheel gold chaton. Extremely rare special case, spring lid with relief, coat of arms of the Borsig family with monogram AB, lid with dedication to the 25th anniversary of service 1929, IWC punch mark. White enamel dial with Arabic numerals and rose gold Breguet hands. Comes with solid gold watch chain and presumably original sales box of the Berlin watch dealer Gustav Habener. Case and movement numbered.
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Diameter: 53 mm
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Weight: 93 g
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Signed: No name
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The present watch is of the owner of the Borsig-Werke Berlin, Ernst von Borsig. The founded factory by August Borsig in 1837 mainly built locomotives. Initially, the required iron had to be imported from England. This dependence led to the founding of an own ironworks in Moabit in 1847, which was opened in 1850.