English astronomic minute repeating pocket watch Circa 1895

Gold hunting cased complicated pocket watch by Charles Frodsham
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An important, English astronomic minute repeating hunting cased pocket watch in best movement design “AD.Fmsz” with perpetual calendar, moon phase and chronograph with 60 min. counter and with Frodsham extract from the archives, circa 1895.
18 carat gold, tiered, polished case with gold dome, case maker’s punch mark “HMF” (Harrison Miles Frodsham), slide for repeating mechanism and chronograph pusher at “6”.
Signed enamel dial, manufacturer Willis, with radial Roman hours, auxiliary seconds, 60 min. counter, inserted month indication, inserted day and date indicator considering the leap year, inserted cobalt blue enamelled moon phase disc with inlaid gold stars and moon and blued spade hands.
3/4 plate movement, Cal. Nicole Nielsen & Comp., frosted, gilt, signed, numbered, with screwed chatons, very finely ground steel chronograph parts, ratchet wheel, English lever escapement, gold screw compensation balance and chatoned diamond endstone on balance.
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Diameter: 55 mm
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Weight: 201 g
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Signed: Cha. Frodsham, 08459 AD.Fmsz
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Charles Frodsham (1810-1871)
Charles Frodsham was a maker of very fine watches, originally of the Strand, London, and then New Bond Street. His best quality watches bear the letters AD.Fmsz, which is interpreted as 1850, the year he bought J.R. Arnold’s estate after his death; the firm was known for a short period as Arnold and Frodsham. He conducted many experiments with compensated balances and the balance spring to discover their underlying principles; he also wrote several papers on technical subjects.