Zenith Eight-day Chronometer

Zenith Eight-day Chronometer, c. 1925, No. 200920, 2 1/2-in. silver-tone dial marked Zenith , Chronometer , with subsidiary up/down indicator and seconds dial, eight-day, stem-wind, stem-set movement marked Vail Watch Co. , U.S.A. , 8 DAYS , Six-6-Jewels , Three-3-ADJ. , Zenith , Swiss , in a fully gimbaled, weighted brass bowl, three-tier mahogany box, all in a felt-lined outer carrying box, ht. 7 1/4 in. Note: Zenith in Switzerland took Vail U.S.A. 6-jewel movements and upgraded them to 15-jewels and added the up/down indicator for military use. Although this one appears to be upgraded the jewel number stamped on the movement has not been changed.