16 size grade 217

Grade 217

Jewels – 17 ruby and sapphire jewels. Composition settings. Olive hole balance jewels. Plates – genuine nickel. Handsomely damaskeened. Gilt lettering. Highly polished, cupped and beveled visible winding wheels. Recoiling click. Dust band. Balance – chamfered and polished compensating balance. Meantime screws. Breguet hair spring. Self-locating hair spring stud. Micrometer nut and screw anti-backslash regulator. Escapement – double roller escapement, Steel escape wheel. Tested on half time without hair spring. Adjustment – adjusted to temperature and three positions. Accurately rated. Dial – double sunk or fancy, glass enamel, ground edge dial. Finish – bevel head jewel, plate  and case screws. Gold round arm center wheel, round arm train wheels with gold effect.

Open Face. Lever set. First run – 1909, last run – 1920. Total production 19000.