Important Collectors Wristwatches Po...
Geneva, Hotel Des Bergues, Apr 22, 1995
Johann Willebrand in Augsburg, circa 1720. Very fine gilt brass and silver equatorial dial.
Pole elevation calculated for 42 cities between 39 and 60 degrees of latitude. Manual calendar in the base with the signs of the Zodiac. In very good condition, in later fitted box. Dim. 60 x 60 mm.