English gold diamond-set watch for the Ottoman market Circa 1750

Open faced pocket watch by Richard Peckover / Markwick Markham & Perigal
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A very fine English gold with diamonds-set verge pocket watch in a triple case for the Ottoman market, circa 1750.
Gilt finished verge movement, chain fusée, finely pierced and engraved balance cock and foot, diamond endstone. Signed white enamel dial with Ottoman numerals and gold Louis XV-style hands. Gold diamonds-set case, pierced, engraved, and keywind. Movement signed: Ric Peckover / London / 6480.
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Diameter: 55 mm
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Signed: Markwick Markham / Perigal London
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Richard Peckover, active 1737–1756.