English silver cylinder watch for Ottoman market Circa 1800

Silver quarter repeating pocket watch
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Rarity, pocket watch repeater for the Ottoman market, automatic winding by Markwick Markham London, circa 1800.
Formerly “COLLECTION SCIENTIFIQUE DE JEAN-CLAUDE SABRIER”. A silver case glazed on both sides, early self winding mechanism, cylinder escapement, repeating hours and quarters, original enamel dial with Ottoman numerals, under the dial signed HF 42191, blued Breguet hands, movement intact, extremely rare.
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Diameter: 58 mm
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Weight: 177 g
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Signed:  Markwick Markham London
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Small defect on the edge