E. Howard Watch Co. (Keystone)
Grade: Series 11
| Manufacturer: | E. Howard Watch Co. (Keystone) |
|
| Manufacturer Location: | Waltham, Massachusetts |
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| Movement Serial Number: | 1360350 |
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| Grade: | Series 11 |
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| Variation: | Arrow.RecoilClick |
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| Model: | E |
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| Estimated Production Year: | 1919 |
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| Run Quantity: | 3,000 |
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| Grade/Model Run: | 8 of 12 |
|
| Grade/Model Total Production: | 25,100 |
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| Variant Est. Production: | 10,500 (16S-ME-21J-ONL-A5PTI-ARROW.RECOILCLICK) |
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| Size: | 16s |
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| Jewels: | 21j |
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| Jewel Setting: | Burnished Jewels |
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| Movement Configuration: | Openface |
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| Movement Finish: | Nickel |
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| Movement Setting: | Lever |
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| Plate: | Bridge Plate |
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| Regulator: | Micrometric |
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| Hairspring: | Breguet |
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| Standard Dial Type: | Single-Sunk |
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| Adjusted: | Yes |
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| Adjusted to Position: | Yes |
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| Adjusted # of Positions: | 5 |
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| Adjusted to Temperature: | Yes |
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| Adjusted to Isochronism: | Yes |
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| Railroad Grade: | Yes |
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| Railroad Grade Classification: | Class A |
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| Movement Markings: |
E. Howard Watch Co. Boston U.S.A. Railroad Chronometer Series 11 [Star in Arrow] 21 Jewels R.R. Adjustment Temperature Five Positions Pat'd '08 |
|
| Case: | Various | |
| Run ID: | 322.G8.16S202.M8.O233.L71.21J53 | |
| Database Version: | v52.792 | |