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From the American Horology Archive:
E. Howard Watch Co. (Keystone)

Grade: Series 11

Series 11

Manufacturer: E. Howard Watch Co. (Keystone) ?
Manufacturer Location: Waltham, Massachusetts ?
Movement Serial Number: 1181409 ?
Grade: Series 11 ?
Variation: DR.SpringClick ?
Model: E ?
Estimated Production Year: 1913 ?
Run Quantity: 6,000 ?
Grade/Model Run: 1 of 12 ?
Grade/Model Total Production: 25,100 ?
Variant Est. Production: 6,000 (16S-ME-21J-ONL-U-DR.SPRINGCLICK) ?
Size: 16s ?
Jewels: 21j ?
Jewel Setting: Burnished Jewels ?
Movement Configuration: Openface ?
Movement Finish: Nickel ?
Movement Setting: Lever ?
Plate: Bridge Plate ?
Double Roller: Yes ?
Regulator: Micrometric ?
Hairspring: Breguet ?
Standard Dial Type: Single-Sunk ?
Adjusted: Yes ?
Adjusted to Position: Yes ?
Adjusted # of Positions: 5 ?
Adjusted to Temperature: Yes ?
Adjusted to Isochronism: Yes ?
Railroad Grade: Yes ?
Movement Markings: E. Howard Watch Co. Boston U.S.A. Railroad Chronometer Series 11 21 Jewels R.R. Adjustment Temperature Five Positions Pat'd '08 Double Roller ?
Case: Various ?
Run ID: 271.G1.16S181.M1.O187.L57.21J40 ?
Database Version: v52.978 ?
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Registry Population: Scoped for This Run Only: 32 (0.53%) ?
$ Estimated Value (12 Month Change): +3.99% Analyzing 331 Sales ?