14 November 2011
Swiss. An unusual openface keyless pocket chronometer
Unsigned, movement no. 1639, circa 1930
Nickel-finished jewelled movement, spring detent escapement, bimetallic compensation balance, white enamel dial, Roman numerals, subsidiary seconds, circular case, glazed display back, movement numbered
58 mm. diam.
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The present chronometer is possibly a so-called "school watch", featuring one of the watchmaking complications a student has to be able to construct in order to be recognized as a watchmaker.
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