Grade 280

 

15 jewels in settings. Olive hole balance jewels. Plates – nickel. Nicely damaskeened. Polished and damaskeened visible winding wheels. Recoiling click. Dust band. Balance – polished compensating balance. Breguet hair spring. Patent regulator. Tested on half time without hair spring. Very closely timed. Round arm center wheel. Dial – double sunk or fancy, glass enamel, ground edge dial. Total production 16100. First run – 1903, last run – 1909.