German silver Glashütte open faced keyless watch Circa 1910

Heavy graduate’s piece made at the Deutsche Uhrmacher schule Glashütte
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A fine, heavy graduate’s piece made at the Deutsche Uhrmacher schule Glashütte, circa 1910.
Silver case, tiered, polished, gold crown and hinge. Dial is enamel, Arabic numerals, auxiliary seconds, blued spade hands. 3/4 plate movement, frosted, gilt, screwed gold chatons, gold screw compensation balance, fine engraved balance cock, index spring fine adjusting device, gold lever and escape wheel.
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Diameter: 56 mm
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Weight: 130 g
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Signed: Bernhard Lier / Deutsche Uhrmacherschule Glashütte i/ SA