English duplex pocket watch with center seconds Circa 1800

Open faced pocket watch by William Ilbery
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A very rare English pocket watch with duplex escapement and center seconds, circa 1800.
Gilt case with spring lid with floral decorations and matching numbers; splendid and fire-gilt movement with duplex escapement and diamond endstone; rare original white enamel dial with center seconds, Roman hours, Arabic minutes and gold hands (one hand repaired). The intact movement is signed and numbered.
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Diameter: 56 mm
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Weight: 108 g
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Signed: Ilbery London
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William Ilbery was one of the leading makers of English pocket watches for the Chinese market. Ilbery worked in London from around 1780 to 1839. He was a very well-known watchmaker and trader who specialized in fine, complicated, mostly very expensive pocket watches made of gold and gemstone with decorative enamel painting.