Swiss decorative Niello silver graduate’s pocket watch Circa 1923

Graduate’s watch of the Watchmaking School Technicum
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A decorative Swiss graduate’s work in a Niello silver case by Watchmaking School Technicum La Chaux de Fonds, circa 1923.
The case is made of Niello silver and has Art Nouveau Lilly decor, and a case maker’s punch mark Niel HF (Huguenin Frères / Huguenin Frères & Co. / Fabrique Niel). The enamel dial has Arabic numerals, auxiliary seconds, and blued Breguet hands. And the rhodium-plated bridge movement has finely ground and bevelled chronograph steel parts, a ratchet wheel, two hammers / two gongs, a governor for repetition, and gold screw compensation balance.
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Diameter: 52 mm
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Weight: 97 g
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Signed: Ecole d’Horlogerie Technicum La Chaux de Fonds, Joseph Canonico