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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/965841
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/965841
Access Date: May 19, 2025
Due to the lack of existing factory records, our E. Howard Watch Co. (Keystone) database has been reconstructed using observations of known watches.
As a result, the information may contain inaccuracies. Please let us know if you have details that can improve the database.
From the American Horology Archive:
-Series4-16s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 4
| Manufacturer: | E. Howard Watch Co. (Keystone) |
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| Manufacturer Location: | Waltham, Massachusetts |
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| Movement Serial Number: | 965841 |
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| Grade: | Series 4 |
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| Model: | 1905 |
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| Estimated Production Year: | 1908 |
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| Run Quantity: | 100 |
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| Grade/Model Run: | 15 of 24 |
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| Grade/Model Total Production: | 16,350 |
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| Variant Est. Production: | 4,130 (16S-M1905-17J-HNP) |
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| Size: | 16s |
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| Jewels: | 17j |
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| Jewel Material: | Ruby & Sapphire |
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| Jewel Setting: | Gold Settings (Screw-Set) |
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| Movement Configuration: | Hunting |
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| Movement Finish: | Nickel |
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| Finish Pattern: | Checkerboard |
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| Movement Setting: | Pendant |
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| Wind Mechanism: | Pendant |
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| Plate: | 3/4 Plate |
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| Double Roller: | Yes |
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| Regulator: | Reed |
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| Hairspring: | Breguet |
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| Pallet Jewel Material: | Sapphire |
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| Standard Dial Type: | Double-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: | No |
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| U.S. Patents: | 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 |
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| Dial Feet Locations: | 10.7, 24.3, 48.9 |
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| Movement Markings: |
E. Howard Watch Co. Boston U.S.A. Adjusted 17 Jewels Pat'd. '05 |
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| Case: | Various | |
| Run ID: | 99.G15.16S74.161905M68.H34.P89.17J72 | |
| Database Version: | v52.648 | |
| Advanced Metrics | ||
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| Registry Population: Scoped for This Run Only | 3 (3.00%) | |
| $ Estimated Value (12 Month Change): | 3.93% Analyzing 76 Sales | |
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Research Note: #964690, #965466, #965633, #965787, #965985: Reported as Marked "Abbott Watch Co." with Circular Pattern. #965331: Verified as Marked "Abbott Watch Co." with Circular Pattern.
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Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
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There are 3 watches in the population registry for this run with 1 image.
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