Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1171773
Access Date: December 11, 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: | 1171773 | |
Grade: | Series 10 | |
Model: | 1907 | |
Estimated Production Year: | 1913 | |
Run Quantity: | 1,680 | |
Grade/Model Run: | 15 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: | 261.G15.16S179.161907M74.O179.L53.21J38 | |
Database Version: | v52.505 | |
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 | 9 (0.54%) | |
$ Estimated Value (12 Month Change): | 7.69% Analyzing 177 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 9 watches in the population registry for this run with 7 images.
|
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.
aconner 63 · March 25, 2023
Serial Number 1170346 was reported as inaccurate.
base, but it is actually lever set. That is all.
Al
Anonymous · August 21, 2022
Serial Number 1170524 was reported as accurate.
chanea90 32 · July 29, 2022
Serial Number 1171217 was reported as inaccurate.
would of qualified for railroad service when
produced.
Anonymous · February 27, 2022
Serial Number 1171749 was reported as accurate.
okiejohn 392 · November 29, 2021
Serial Number 1171773 was reported as accurate.
aconner 63 · July 24, 2021
Serial Number 1170346 was reported as accurate.
23Greenwich Supporter 252 · July 8, 2021
Serial Number 1170497 was reported as accurate.
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