Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1110936
Access Date: November 26, 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 5
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 1110936 | |
| Grade: | Series 5 | |
| Variation: | Hooked Bridge Jeweled Barrel | |
| Model: | 1907 | |
| Estimated Production Year: | 1911 | |
| Run Quantity: | 1,500 | |
| Grade/Model Run: | 22 of 26 | |
| Grade/Model Total Production: | 16,400 | |
| Variant Est. Production: | 9,800 (16S-M1907-19J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL) | |
| Size: | 16s | |
| Jewels: | 19j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Burnished Jewels | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Lever | |
| Plate: | Bridge Plate | |
| Bridge Type: | Center | |
| Double Roller: | Yes | |
| Barrel: | Jeweled Safety | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| Pallet Jewel Material: | Sapphire | |
| Standard Dial Type: | Double-Sunk | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted # of Positions: | 5 | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Railroad Grade: | Yes | |
| Dial Feet Locations: | 10.7, 24.3, 48.9 | |
| Movement Markings: | E. Howard Watch Co. Boston U.S.A. Series 5 Adjusted 19 Jewels [Triangle in Arrow] Pat'd. '08 Extra Adjustment Five Positions Temperature |
|
| Case: | Various | |
| Run ID: | 210.G23.16S142.161907M42.O132.L29.19J35 | |
| Database Version: | v52.462 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 43.95 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 154.56 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.794% | |
| Registry Population: Scoped for This Run Only | 8 (0.53%) | |
| $ Estimated Value (12 Month Change): | -1.15% Analyzing 96 Sales | |
Production Metrics Tree: Grade Series 5
Target Profile: 16S-M1907-19J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL
| E. Howard Watch Co. (Keystone) Grade Series 5 (All Variations): 16,800 ETP | |||
| 16S: 16,800 100.00% 16s, Grade Series 5 |
|||
| 16S-M1907: 16,400 97.62% 16s, Grade Series 5, Model 1907 |
Other: 400
Other Models or Unclassified |
||
| 16S-M1907-19J: 16,400 97.62% 16s, Grade Series 5, Model 1907, 19 Jewels |
|||
| 16S-M1907-19J-ONL: 14,000 83.33% 16s, Grade Series 5, Model 1907, 19 Jewels, Openface/Lever/Nickel |
Other: 2,400
Other Configs or Unclassified |
||
| 16S-M1907-19J-ONL-A5PTI: 14,000 83.33% | |||
| 16S-M1907-19J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL: 9,800 58.33% | Other: 4,200
Other Variants or Unclassified |
||
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 8 watches in the population registry for this run with 3 images.
|
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Help Us Help Others By Improving the Database:
Does this information describe your movement accurately?
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.
sroglum Supporter 36 · July 24, 2023
Serial Number 1111111 was reported as accurate.
ChrisG Top Contributor Supporter 601 · October 24, 2022
Serial Number 1110694 was reported as accurate.
Anonymous · January 23, 2022
Serial Number 1110770 was reported as accurate.
Anonymous · September 23, 2021
Serial Number 1110540 was reported as accurate.
Anonymous · September 18, 2021
Serial Number 1111004 was reported as accurate.
Anonymous · January 16, 2021
Serial Number 1111679 was reported as accurate.
Anonymous · November 24, 2020
Serial Number 1110990 was reported as accurate.
Anonymous · November 23, 2020
Serial Number 1110990 was reported as accurate.
Anonymous · November 12, 2020
Serial Number 1111378 was reported as accurate.
Kurlander Supporter 25 · August 13, 2020
Serial Number 1111700 was reported as accurate.
Anonymous · July 26, 2020
Serial Number 1111733 was reported as accurate.
Strawbs 11 · July 17, 2020
Serial Number 1110608 was reported as accurate.
Strawbs 11 · July 14, 2020
Serial Number 1110608 was reported as accurate.
bunnofnickle 67 · July 4, 2020
Serial Number 1111700 was reported as accurate.
Anonymous · May 6, 2020
Serial Number 1111157 was reported as accurate.
Anonymous · April 19, 2020
Serial Number 1111733 was reported as accurate.
Anonymous · March 23, 2019
Serial Number 1110950 was reported as accurate.
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