English 18 carat gold complicated chronograph Circa 1898

Gold half hunting cased complicated lever chronograph by Benson
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A fine English 18 carat gold half hunting cased minute repeating perpetual calendar chronograph watch with moon phases, circa 1898. 3/4 Gilt finished jewelled English lever movement, bimetallic compensation balance, minute repeating on two hammers on to two gongs, repeat activated through a slide in the band. Gold cuvette. White enamel dial with Roman numerals, outer calibrated minute track with Arabic five minute divisions, four subsidiary dials for day, date and month combined with leap year indication, phases of the moon and lunar calendar combined with subsidiary seconds and blued steel spade hands. Polished case, front cover with aperture to view the dial, blue enamel chapter ring with Roman numerals and inner calibrated track. Movement signed and numbered, case stamped F.T. for Frederick Thoms and cuvette A.S., case stamped with London date mark for 1898.
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Diameter: 54 mm
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Signed: J.W. Benson 62 & 64 Ludgate Hill London By Special Warrant to H.M. the Queen and H.R.H. The Prince of Wales