Austrian 18K gold and enamel repeating verge watch Circa 1800

Gold and enamel à tact and à toc quarter repeater from Vienna
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An Austrian decorative gold and enamel open faced à tact and quarter repeating à toc verge pocket watch, circa 1800.
The back cover with a polychrome enamel pastoral scene, both bezels are decorated with enamel painted medallions depicting flowers and foliage, two diamond thumb pieces, a pusher for repetition through the pendant, a large lateral hinge. White enamel dial with radial Roman hours, Arabic minutes and paste set hands. Fire gilt full plate movement, key wind, chain and fusee, solid movement pillars, two hammers, three arm steel balance, a fine florally engraved and pierced balance bridge.
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Diameter: 44 mm
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Weight: 76 g
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Signed: No name
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Montre à toc. A ‘dumb’ repeater watch in which a hammer strikes the inside of the case to produce a muffled sound.
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Montre à tact. A type of watch made after 1795 by Abraham Louis Breguet to give time by touch. In the late eighteenth century it was considered impolite to consult one’s watch in company, a question of etiquette which the à tact watch helped to solve (the French tact, meaning touch, has given the English tact and tactful). Knobs representing the hours are positioned around the case with a large hand that could be turned until it met resistance. Its position in relation to the knobs gave the time. This kind of tactile watch is now mainly used by the blind and visually impaired.