Swiss minute repeating pink gold Zenith clock watch Circa 1913

Pink gold keyless repeating clock watch by Zenith
–
An extremely fine and very rare Swiss 18 carat pink gold two-train trip minute repeating carillon grande sonnerie keyless clock watch, circa 1913.
Four body, bassine and polished case with hinged gold cuvette. White enamel dial with Breguet numerals, outer minute track, subsidiary seconds and gold spade hands.
Matte gilt movement with double train and differential winding, 30 jewels, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring with over coil, index regulator, striking the hours and quarters on three gongs with three hammers, centrifugal governor between the dial and dial plate, Silence/Sonnerie selection lever on the band and repeating activated by a trip push-piece in the band.
Dial case, cuvette and movement signed.
–
Diameter: 55 mm
–
Signed: Zenith Le Locle Switzerland