Very rare Swiss silver open faced deck chromometer Circa 1907

Silver deck watch by Zenith
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A very rare Swiss silver open faced deck chronometer, circa 1907. Very fine precision movement, spring detent escapement, extremely rare fine adjusting device patented by Charles Rosat. White enamel dial with Roman hours and outer minute divisions, subsidiary seconds, blued hands. Plain case. Case numbered, dial signed, movement signed and numbered. Come with a Bulletin de Marche Neuchatel, Suisse and the sales box of a jeweller from Bautzen.
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Diameter: 51 mm
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Weight: 108 g
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Signed: Zenith
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According to the Zenith archive, only a few of these watches were made in the period 1907-1908.