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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/993756
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/993756
Access Date: December 24, 2024
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:
E. Howard Watch Co. (Keystone)
Grade: Abbott
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 993756 | |
| Grade: | Abbott | |
| Variation: | Abbott Sure Time | |
| Model: | 1905 | |
| Estimated Production Year: | 1917 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 7 of 7 | |
| Grade/Model Total Production: | 7,200 | |
| Variant Est. Production: | 5,300 (16S-M1905-17J-HNP-A-ABBOTT SURE TIME) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Jewel Material: | Ruby | |
| Jewel Setting: | Raised Gold Settings (Screw-Set) | |
| Movement Configuration: | Hunting | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Circular | |
| Movement Setting: | Pendant | |
| Plate: | 3/4 Plate | |
| Double Roller: | Yes | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| Standard Dial Type: | Double-Sunk | |
| Adjusted: | Yes | |
| Railroad Grade: | No | |
| Dial Feet Locations: | 10.7, 24.3, 48.9 | |
| U.S. Patents: | 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 | |
| Movement Markings: | Abbott Watch Co. Adjusted 17 Jewels Pat'd '05 |
|
| Case: | Various | |
| Run ID: | 133.G7.16S106.161905M93.H47.P110.17J99 | |
| Database Version: | v52.526 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 21.67 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 76.17 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 1.377% | |
| Registry Population: Scoped for This Run Only | 10 (1.00%) | |
|
Research Note: All examples seen as marked "Abbott Watch Co." with various dials.
|
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Production Metrics Tree: Grade Abbott
Target Profile: 16S-M1905-17J-HNP-A-ABBOTT SURE TIME
| E. Howard Watch Co. (Keystone) Grade Abbott (All Variations): 7,200 ETP | |
| 16S: 7,200 100.00% 16s, Grade Abbott |
|
| 16S-M1905: 7,200 100.00% 16s, Grade Abbott, Model 1905 |
|
| 16S-M1905-17J: 7,200 100.00% 16s, Grade Abbott, Model 1905, 17 Jewels |
|
| 16S-M1905-17J-HNP: 7,200 100.00% 16s, Grade Abbott, Model 1905, 17 Jewels, Hunting/Pendant/Nickel |
|
| 16S-M1905-17J-HNP-A: 7,200 100.00% | |
| 16S-M1905-17J-HNP-A-ABBOTT SURE TIME: 5,300 73.61% | Other: 1,900
Other Variants or Unclassified |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 10 watches in the population registry for this run with 2 images.
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Verification Reports for this Run
The following reports have been graciously submitted by dedicated members in reference to this production run. These reports are useful to verify data and track inaccuracies that require further research. Please note that reports may contain inaccurate information or assumptions that must be dilligently considered with other available sources.
Anonymous · July 16, 2022
Serial Number 993511 was reported as accurate.
Changes since this report was submitted:
Grade changed from Series 3 to Abbott
Double Roller changed from No to Yes
JerryT Waltham Expert Small Watch Expert 425 · June 9, 2021
Serial Number 993371 was reported as inaccurate.
Note: "Abbott Watch Co." movement has double-sunk enamel
dial. Dial is marked "ABBOTT / SURE Time" but
name is not fired into enamel and will wash off.
dial. Dial is marked "ABBOTT / SURE Time" but
name is not fired into enamel and will wash off.
Changes since this report was submitted:
Grade changed from Series 3 to Abbott
Double Roller changed from No to Yes
Anonymous · January 7, 2019
Serial Number 993466 was reported as inaccurate.
Note: The two outer cogs are backwards. It also says
Abbott Watch Co instead of E Howard Watch company
Abbott Watch Co instead of E Howard Watch company
Curator Response: Thanks for the report. The "Abbott" markings are expected with late-production Series 3. Please see the research note on this run.
Changes since this report was submitted:
Grade changed from Series 3 to Abbott
Double Roller changed from No to Yes
