English 22 carat gold quarter repeating watch Circa 1812

Gold pair cased quarter repeating pocket watch
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James Rigby, a 22 carat gold pair cased open-faced quarter repeating pocket watch, circa 1812.
Duplex fusee movement, steel three armed balance, pierced and engraved balance cock, steel set diamond endstone, silver Tompion style regulator, cylindrical pillars, engraved Ja. Rigby, Charring Cross, dust cover, white enamel dial, black Roman numerals, spade hands, subsidiary constant seconds dial, two-piece plain polished outer case, the back cover engraved HC.
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Diameter: 52 mm 
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Weight: 135 g.
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Signed: Ja. Rigby Charring Cross
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James Rigby was working in London 1795 – 1808. Succeeded Leroux in 1808 at Charing Cross -1830.