Swiss 18k gold carillon minute repeating watch Circa 1915

Gold minute repeating lever watch
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A very fine and extremely rare, slim Swiss carillon minute repeating 18K gold hunting cased dress watch, circa 1915. Gilt bar movement, 28 jewels, counterpoised straight line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator, repeating the hours, quarter hours and minutes with four hammers on four gongs activated by a slide in the band.
Case polished. Hinged gold cuvette.
White enamel dial with Breguet numerals, outer minute track, subsidiary seconds. Black steel Breguet hands.
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Diameter: 54 mm
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Signed: Constant Piguet, Sentier
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On March 20, 1896, Constant Piguet patented this system of minute-repeat with carillon, under the No. 11948 . Carillon minute repeating watches are very rare; only a few are known either with four hammer chimes or Westminster chimes. The makers that specialized in this type of watch were Constant Piguet, Eduard JeanRichard, and Victorin Piguet. The known tunes played by four hammer carillons are: that of the present watch, Westminster chimes, the Swiss National anthem, and God Save the King.