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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1151605/movement
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1151605/movement
Access Date: November 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:
-Series10-16s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 10
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 1151605 | |
| Grade: | Series 10 | |
| Model: | 1907 | |
| Estimated Production Year: | 1911 | |
| Run Quantity: | 2,900 | |
| Grade/Model Run: | 8 of 21 | |
| Grade/Model Total Production: | 17,800 | |
| Variant Est. Production: | 15,650 (16S-M1907-21J-ONL) | |
| Size: | 16s | |
| Jewels: | 21j | |
| Jewel Setting: | Burnished Jewels | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Parallel | |
| Movement Inlay Color: | Black | |
| Movement Setting: | Lever | |
| Plate: | Bridge Plate | |
| Bridge Type: | Center | |
| Double Roller: | Yes | |
| Barrel: | Going | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| 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. 21 Jewels Series 10 [Star in Arrow] Pat'd. '10 Extra Adjustment Five Positions Temperature |
|
| Case: | Various | |
| Run ID: | 248.G8.16S168.161907M64.O166.L45.21J31 | |
| Database Version: | v52.457 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 53.59 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 188.45 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 3.407% | |
| Registry Population: Scoped for This Run Only | 15 (0.52%) | |
| $ Estimated Value (12 Month Change): | 13.12% Analyzing 174 Sales | |
Production Metrics Tree: Grade Series 10
Target Profile: 16S-M1907-21J-ONL-A5PTI
| E. Howard Watch Co. (Keystone) Grade Series 10 (All Variations): 17,800 ETP | |
| 16S: 17,800 100.00% 16s, Grade Series 10 |
|
| 16S-M1907: 17,800 100.00% 16s, Grade Series 10, Model 1907 |
|
| 16S-M1907-21J: 17,800 100.00% 16s, Grade Series 10, Model 1907, 21 Jewels |
|
| 16S-M1907-21J-ONL: 15,650 87.92% 16s, Grade Series 10, Model 1907, 21 Jewels, Openface/Lever/Nickel |
Other: 2,150
Other Configs or Unclassified |
| 16S-M1907-21J-ONL-A5PTI: 15,650 87.92% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 15 watches in the population registry for this run with 6 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.
Rcardkidz 4072 · August 10, 2024
Serial Number 1152830 was reported as accurate.
Anonymous · August 25, 2022
Serial Number 1150484 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes
wepouaout 23 · April 3, 2022
Serial Number 1150774 was reported as inaccurate.
Note: Movement is lever set.
Curator Response: Thanks for the report. The database has been updated accordingly.
Changes since this report was submitted:
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes
cmdraven 4083 · December 11, 2021
Serial Number 1151367 was reported as accurate.
Blicquer Supporter 90 · November 12, 2021
Serial Number 1151714 was reported as accurate.
Blicquer Supporter 90 · September 27, 2021
Serial Number 1151714 was reported as inaccurate.
Note: This watch is lever set.
Curator Response: Thanks for the report. The database has been updated accordingly.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
mdmiller99 Supporter 33 · August 26, 2021
Serial Number 1150884 was reported as inaccurate.
Note: Lever Set
Curator Response: Thanks for the confirmation!
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Doctahcoach 4 · July 24, 2021
Serial Number 1152045 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · June 19, 2021
Serial Number 1150578 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Fakwtc17 33 · April 7, 2021
Serial Number 1152564 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
Anonymous · March 27, 2021
Serial Number 1150677 was reported as inaccurate.
Note: This serial number is a lever set movement.
Believe it rates as railroad grade.
Believe it rates as railroad grade.
Curator Response: Correct. A Lever-Set Series 10 would have qualified for railroad service.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · January 17, 2021
Serial Number 1152091 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Timothyj33 1 · October 24, 2020
Serial Number 1150847 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · August 18, 2020
Serial Number 1150578 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · August 17, 2020
Serial Number 1152232 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · August 9, 2020
Serial Number 1151863 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · July 10, 2020
Serial Number 1151863 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · April 21, 2020
Serial Number 1150898 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · October 23, 2019
Serial Number 1152257 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · October 14, 2019
Serial Number 1152257 was reported as inaccurate.
Note: Mine has original Montgomery dial. I believe it is
a RR model. Thank you.
a RR model. Thank you.
Curator Response: Thanks for the report. This run is mixed with pendant-set and lever-set movements. Yes, if your watch is lever-set, it would have qualified for railroad service.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · September 8, 2019
Serial Number 1152045 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
oilseed Supporter 471 · July 18, 2019
Serial Number 1151451 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · April 25, 2019
Serial Number 1150563 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · April 22, 2019
Serial Number 1150563 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · April 13, 2019
Serial Number 1150122 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
WLBelkriver33 804 · March 2, 2019
Serial Number 1151703 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
pwilliams9874 18 · January 30, 2019
Serial Number 1152164 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · November 26, 2018
Serial Number 1151272 was reported as accurate.
Changes since this report was submitted:
Movement Setting changed from Mixed to Lever
Railroad Grade changed from No to Yes
Anonymous · October 17, 2018
Serial Number 1152211 was reported as accurate.
Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
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