Swiss quarter repeating three coloured watch Circa 1800

Open faced gold pocket watch by Robert à Geneva
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A Swiss very rare three coloured splendour pocket watch with repeating hours and quarters, circa 1800.
18 Carat gold extravagant splendour case with Swiss punches, three different gold colours, high relief and turquoises on both sides; complex verge movement with repeating hours and quarters; original and very attractive gold dial with two coloured gold relief with blossoms and leaves, enamelled cartouches, enamelled minute ring and gold Breguet hands.
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Diameter: 44 mm
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Weight: 72 g
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Signed: No name