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.