Beschreibung:

Heyer. A very fine and unusual 18K gold openface astronomical watch with sweep centre seconds and enamel scene on the cuvette Signed J.M. Heyer, Amsterdam, circa 1795 With full plate gilt-finished cylinder movement, chain fusée, engraved and pierced balance cock, three-arm steel balance, large arch-shaped regulator, gold cuvette with light blue champlevé enamel scroll decoration, centred by a polychrome painted enamel scene depicting a seated lady and cherub in a classical landscape, the white enamel dial with outer Arabic five minute divisions, sweep centre seconds, eccentric small hour dial with Roman numerals, three subsidiary dials indicating the four seasons combined with lunar calendar, date combined with day and sun, moon and planets mercury, mars, venus and jupiter, signs of the zodiac combined with month and numbers of day per month, the zodiac hand attached to a revoling pink gold disc with engraved starry sky, in circular plain case, movement signed 59 mm. diam.