large Swiss silver open faced lever deck watch Circa 1900

Silver deck watch by Adolphe Haecker
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A Swiss deck watch for the German market, circa 1900.
Probably graduate’s piece of the watchmaking school Hamburg.
This watch has a silver case with a silver dome formerly with dedication engraving (A. Kirschmann Wilhelmshaven). The dial is enamel with Roman numerals and  subsidiary seconds. The movement is a 2/3 plate movement with a Glashuette screw compensation balance.
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Diameter: 58 mm
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Weight: 142 g
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Signed: Adolphe Haecker, La Chaux-de-Fonds