English Marine chronometer with power reserve Circa 1850

Eight day Marine chronometer by Tallibart
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A very fine and very rare, extra large English eight day going mahogany cased Marine chronometer with power reserve indication and ratchet key made for the Islamic market, circa 1850. Half plate movement, brass with spotted decoration, ring turned pillars, blued steel screws, reverse fusee and chain, Harrison’s maintaining power, brass sub frame for the escapement, Earnshaw type, spring detent with jewelled locking stone, bimetallic compensation balance with cylindrical temperature compensation weights, meantime adjustment nuts, freesprung blued steel helical balance spring, diamond endstone. Silvered dial with Islamic numerals, outer minute track, large subsidiary seconds at 6, power reserve indiction at 12 and original gold spade hands. Three tier brass bound mahogany box, the second tier glazed and set with an ivory number plaque, the base with brass flush handles, gimballed brass bowl with screw down bezel and convex glass. Dial signed.
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Dimensions: 23 x 23.5 x 23 cm
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Signed: Tallibart London
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Tallibart is recorded working in Rathbone Place, London around 1850, the firm specialised in making chronometers for the Islamic market.