Swiss gilt-brass repeater with grande sonnerie striking Circa 1910

Double-glazed lever clock watch
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A very rare Swiss gilt-brass, two-train, Grande Sonnerie striking and trip quarter repeating keyless clock watch, circa 1890. A gilt-brass, polished case, glazed on both sides, slides on the band for silence/sonnerie. White enamel dial with radial Roman numerals, outer minute track with Arabic five-minute numerals, subsidiary seconds and gold spade hands. A rhodium-plated movement, double train with differential winding, 35 jewels, counterpoised straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring with overcoil, index regulator, striking the hours and quarters on gongs with two hammers, repeating activated by a trip-slide on the band.
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Diameter: 53.5  mm
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Signed: No Name
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Grande Sonnerie clock watches with quarter repeating are very unusual, most being minute repeating. This very high-quality watch movement would have been destined for a much grander watch case than the one it is presently housed in. It is possible that due to its unusual nature, it was never sold and never left the Swiss manufacturer as a complete watch but put in what might be termed a working case.