Manufacturer: E. Howard Watch Co. (Keystone) Manufacturer Location: Waltham, Massachusetts Movement Serial Number: 1328733 Grade: Series 7 Variation: Arrow and Empty Circle Model: 1912 Estimated Production Year: 1917 Run Quantity: 40,000 Total Production: 157,700 Size: 12s Jewels: 17j Movement Configuration: Openface Movement Finish: Nickel Movement Setting: Pendant Plate: 3/4 Plate Double Roller: Yes Hairspring: Breguet Adjusted: Yes Adjusted # of Positions: 3 Adjusted to Temperature: Yes
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