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Losing 220 seconds a day with a 160 amplitude and 8ms beat error
Caliber: 11 DP
Amplitude 186
NASA used Accutron powered movements in all their spacecraft for their supreme accuracy
Antique 16s 1907 Illinois 21j Monitor Pocket Watch Movement 184 3 Finger Bridge Losing 220 seconds a dayProduct Description Item: Pocket Watch Movement Brand: Illinois Model: 4 Size: 16s Year: 1907 Movement: Mechanical Jewels: 21 Grade: 184 Country: USA Gender: Unisex Product Measurements Diameter: 43mm Standardized Size for Pocket Watches: 16s Product Condition Overall Condition: Fair, overall condition Functions: Running, but may be in need of service. This means, it can run unreliably, start or stop and timekeeping is not guaranteed Dial condition:
