English gold/agate lever watch in Louis XV style Circa 1800

Gold open faced pocket watch
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An exquisite English pocket watch with gold/ agate case in Louis XV style, signed Tupman London, circa 1800. An 18K pink gold and agate, opening button set with a diamond, technically interesting movement with early lever escapement and diamond endstone, main plate signed and numbered, balance cock finely engraved, bird scene, decorative Louis XV dial with blue Roman hours and black Arabic minutes, probably original Poker & Beetle steel hands, very beautiful condition, very rare.
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Diameter: 42 mm
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Weight: 60 g
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Signed: Tupman London