Swiss gold minute repeating lever pocket watch Circa 1919

Swiss hunting cased watch with chronograph 
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A very fine and rare Swiss 18K yellow gold, hunting cased, keyless, minute repeating pocket watch, circa 1919. A lever chronometer with chronograph and 30-minute register. Accompanied by a fitted box. Bassine, polished. Hinged gold cuvette. White enamel dial with dauphine numerals, outer minute track with outermost 1/5th seconds chronograph divisions, Arabic five minute/seconds numerals, 30-minute register dial at 12, subsidiary seconds dial at 6. Gold spade hands.

A frosted gilt movement, bar calibre, 35 jewels, counterpoised straight-line lever escapement, cut-bimetallic compensation balance with blued steel Breguet balance spring, swan-neck micrometric regulator, repeating on gongs activated by a slide in the band. Dial, case and movement signed.
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Diameter: 56 mm
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Signed: Vacheron & Constantin Genève
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Vacheron Constantin defined as a Chronometer of those watches having passed the Observatory timing contests. If for commercial reasons, a watch was not submitted to all the tests, it was called a Demi-Chronometer.