Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1148483/link
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: Series 10
Manufacturer: | E. Howard Watch Co. (Keystone) | |
Manufacturer Location: | Waltham, Massachusetts | |
Movement Serial Number: | 1148483 | |
Grade: | Series 10 | |
Model: | 1907 | |
Estimated Production Year: | 1910 | |
Run Quantity: | 1,820 | |
Grade/Model Run: | 4 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: | 244.G4.16S164.161907M60.O162.L43.21J27 | |
Database Version: | v52.518 | |
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 | 3.404% | |
Registry Population: Scoped for This Run Only | 10 (0.55%) | |
$ Estimated Value (12 Month Change): | 10.79% Analyzing 176 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 10 watches in the population registry for this run with 3 images.
|
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.
Anonymous · January 11, 2023
Serial Number 1149815 was reported as inaccurate.
avpalermo Supporter 645 · November 13, 2022
Serial Number 1149796 was reported as inaccurate.
LEVER, NOT Pendant!
Please correct this error in your database,
kindly. Thank you.
Anonymous · June 21, 2021
Serial Number 1149501 was reported as inaccurate.
Anonymous · January 29, 2021
Serial Number 1148769 was reported as inaccurate.
jeromeschley 60 · January 18, 2021
Serial Number 1149602 was reported as accurate.
dstuartblue 17 · November 23, 2020
Serial Number 1148114 was reported as inaccurate.
Anonymous · October 16, 2020
Serial Number 1149165 was reported as accurate.
Anonymous · February 19, 2020
Serial Number 1149036 was reported as accurate.
backwardglance1 99 · December 5, 2019
Serial Number 1148655 was reported as accurate.
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