Cal 18 1/2 N.V.

(c): Vultures78

ZENITH movement cal. 18 1/2 N.V. has been produced in September 1922. 18 1/2 is movements size measured in lignes. It is a 16 jewels caliber, vibrating 18,000 times per hour. Entire series of 18 1/2 movements was made in 925.270 pieces in period between 1905-1955.

This watch was made especially for Unions of Swiss banks 50 th anniversary. Nicely decorated in Niello technique engraving both on bezel and back. On the back of the case there is picture of Helvetias head, female personification of Switzerland. Very unique pocketwatch. Number of made examples is unknown. This is German version, and there is a French version as well.

Cal 18 1/2 N.V.S.I

(c): Mars Mountain

ZENITH movement cal. 18 1/2 N.V.S.I, produced on April 22 1929. The cal. numbers represent the width of the movement measured in lignes. Patented regulation device. It is a 15 jewels caliber, vibrating 18,000 times per hour. At the time, this was one of the most common calibers in Zenith pocket watches.

This watch is 49 mm (excl. crown), and it has a silver case partly rose gold plated. The dial has a slight amber tone. The watch runs and keeps time well, and it is nice to look at. There is a tiny five pointed star on top of the crown.