English quarter striking and repeating coach watch Circa 1791

Large silver three train quarter striking and quarter repeating coach watch 
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A large English silver and under painted horn triple cased three train quarter striking and quarter repeating verge coach watch made for the Turkish market, circa 1791, gilded full plate movement, verge escapement, decoratively pierced balance cock engraved with flowers and foliage, a classical urn at the neck, similarly decorated broad foot, diamond endstone, separate barrels for hour/quarter striking and 1/4 repeating trains, going train with fusee and chain, cylindrical pillars, gilt metal dust cap engraved with foliage, movement and dust cap signed.
White enamel, Turkish numerals, outer minute ring, gold hands, signed Henry Borrell, Marco, London.
Silver inner case, the back engraved with trophies of war, bezels pierced and engraved with scrolling flowers and foliage, stirrup bow with chased leaf-form decoration, silver middle case similarly decorated, the back engraved with trophies of war, pierced bezels engraved with flowers and foliage, inner and mid cases with maker’s mark IR incuse for James Richards, outermost case of under painted horn to simulate shagreen with decoratively pierced and engraved bezels and piqué decoration.
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Diameter: 130 mm
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Signed: Heny. Borrell Marco London
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In addition to the two trains for going and hour/quarter striking, the movement of this coach watch has a separate, third, quarter repeating train which is operated by depressing the pendant. Two hammers are for striking with a further two for repeating. The three cases are all highly decorative, the outermost is covered with under-painted horn to simulate shagreen. The dial has numerals for both the Turkish and Middle East markets. F. J. Britten in Old Clocks and Watches and their Makers, notes that Henry Borrell was based at 15 Wilderness Row.