Pocket Watch Database
Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1106706
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1106706
Access Date: April 19, 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:
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E. Howard Watch Co. (Keystone)
Grade: Series 8
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 1106706 | |
| Grade: | Series 8 | |
| Model: | 1912 | |
| Estimated Production Year: | 1912 | |
| Run Quantity: | 750 | |
| Grade/Model Run: | 1 of 10 | |
| Grade/Model Total Production: | 8,450 | |
| Variant Est. Production: | 7,650 (12S-M1912-23J-ONP) | |
| Size: | 12s | |
| Jewels: | 23j | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Pendant | |
| Plate: | Bridge Plate | |
| Double Roller: | Yes | |
| Hairspring: | Breguet | |
| Adjusted: | Yes | |
| Adjusted # of Positions: | 5 | |
| Adjusted to Temperature: | Yes | |
| Railroad Grade: | No | |
| Case: | Various | |
| Run ID: | 198.G10.12S34.121912M1.O113.P139.23J21 | |
| Database Version: | v52.235 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 23.03 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 76.48 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 1.481% | |
Production Metrics Tree: Grade Series 8
Target Profile: 12S-M1912-23J-ONP-A5PT
| E. Howard Watch Co. (Keystone) Grade Series 8 (All Variations): 13,400 ETP | |||
| 12S: 13,400 100.00% 12s, Grade Series 8 |
|||
| 12S-M1912: 8,450 63.06% 12s, Grade Series 8, Model 1912 |
Other: 4,950
Other Models or Unclassified |
||
| 12S-M1912-23J: 8,450 63.06% 12s, Grade Series 8, Model 1912, 23 Jewels |
|||
| 12S-M1912-23J-ONP: 7,650 57.09% 12s, Grade Series 8, Model 1912, 23 Jewels, Openface/Pendant/Nickel |
Other: 800
Other Configs or Unclassified |
||
| 12S-M1912-23J-ONP-A5PT: 7,650 57.09% | |||
Help Us Help Others By Improving the Database:
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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.
ebsrods Supporter 111 · March 18, 2021
Serial Number 1106706 was reported as inaccurate.
Note: movement marked 23 jewel not 21.
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.
Changes since this report was submitted:
Jewels changed from 21j to 23j
Factory Model changed from 1908 to 1912
