Silver German Glashütte precision chronometer Circa 1926

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An important, as new and heavy precision chronometer made at the Deutsche Ubermacherschule Glashütte with a new innovative power reserve indication according to Alfred Helwig with power reserve indication and documentation, circa 1926. Silver case, smooth, case design lucia, gold crown, pusher, hinges and shackle. The dial is silvered, indexes, auxiliary seconds, power reserve indicator, blued spade hands. 3/4 plate movement, frosted, gilt, screwed gold chatons, spring detent escapement, fine escape wheel with mirror-polished steel cock, heavy gold screw compensation balance, blued free-sprung helical balance spring, florally hand-engraved balance cock.