Swiss. An unusual and rare silver double dial astronomical verge watch with box

Swiss. An unusual and rare silver double dial astronomical verge watch with box
Unsigned, circa 1820
Gilt-finished cylinder movement, white enamel dials, one side centred by the hour dial with Arabic numerals and serpentine gilt hands, surrounded by eight subsidiary dials for season, lunar calendar, day, planetary symbols, constant seconds, zodiac signs, month and days and date, the floral decorated reverse with eccentric aperture revealing the scroll decorated balance cock, arch-shaped regulator sector to the left, framed by the inscription Mettons a profit le temps quand il est passé il ne revient plus (let's benefit from time, once it has passed it will not come back) on a red chapter ring, circular silver case, unsigned
49.5 mm. diam.