English gold enamel verge 1/8 hours repeater Circa 1770

Gold and enamel 1/8 hours repeater with en grisaille painting
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An English gold and enamel pair cases verge pocket watch 1/8 hours repeater with en grisaille painting, George Michael Moser and Augustin Toussaint manner, England circa 1770.
Outer case with 5-part lateral hinge, enamel in the manner of George Michael Moser and Augustin Toussaint with oval en grisaille painting surrounded by cobalt blue, green and white enamel decoration, finest sound openings, inner case pierced and engraved, also 22 Carat gold, case with a portrait of a woman with an angel, bell inside, very fine English verge movement with diamond endstone and regulator disc, cage also pierced and engraved with portrait; repeating hours, quarters and eighth; main plate signed Martin Royal Exchange London, signed enamel dial, hands with diamonds.
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Diameter 47 mm
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Weight 104 g
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Signed: Martin Royal Exchange London