18 size grade 328

Grade 328

Jewels – 21 extra fine ruby and sapphire jewels. Gold settings. Olive hole balance jewels. Plates – Richly damaskeened in a handsome pattern. Pearl finish under dial and on under side of plates. Gilt lettering. Stem winding work all highly polished and finished. Recoiling click. Dust band. Setting – lever. Self-locking setting device. Balance – chamfered and extra highly polished compensating balance with gold balance screws. Meantime screws. Breguet hair spring. New stationary hair spring stud. “Precision” nut and screw regulator. Escapement – Double roller escapement, cone pivoted and cap jeweled. Sapphire pallets and jewel pin. Steel escape wheel, highly finished and beveled with all acting surfaces ground and polished. Tested on half time without hair spring. Adjustments – adjusted to temperature, five positions and isochronism. Most accurately rated. Dial – Special, high-grade glass enamel, ground edge dial. Finish – all visible steel work, plate and case screws, highly polished and cornered.

Hunting. Lever set. First run – 1908, last run – 1908. Total production 1000.