Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1114756/movement
Access Date: September 01, 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 1 Pocket Watch](https://pocketwatchdatabase.com/assets/images/cuts/E.HowardWatchCo.(Keystone)-Series1-16s-Model1907.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 1
Manufacturer: | E. Howard Watch Co. (Keystone) | ![]() |
Manufacturer Location: | Waltham, Massachusetts | ![]() |
Movement Serial Number: | 1114756 | ![]() |
Grade: | Series 1 | ![]() |
Variation: | Type 5 | ![]() |
Model: | 1907 | ![]() |
Estimated Production Year: | 1911 | ![]() |
Run Quantity: | 600 | ![]() |
Grade/Model Run: | 7 of 7 | ![]() |
Grade/Model Total Production: | 5,700 | ![]() |
Variant Est. Production: | 600 (16S-M1907-21J-ONL-A0PTI-TYPE 5) | ![]() |
Size: | 16s | ![]() |
Jewels: | 21j | ![]() |
Jewel Material: | Ruby & Sapphire | ![]() |
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: | Safety | ![]() |
Regulator: | Reed | ![]() |
Hairspring: | Breguet | ![]() |
Pallet Jewel Material: | Sapphire | ![]() |
Standard Dial Type: | Double-Sunk | ![]() |
Adjusted: | Yes | ![]() |
Adjusted to Position: | Yes | ![]() |
Adjusted # of Positions: | 3 or 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 1 Adjusted 21 Jewels [Star in Arrow] Pat'd. '08 Extra Adjustment Five Positions Temperature |
|
Case: | Various | ![]() |
Run ID: | 220.G9.16S148.161907M50.O136.L34.21J20 | ![]() |
Database Version: | v52.387 | ![]() |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 17.16 | ![]() |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 67.42 | ![]() |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 1.003% | ![]() |
Registry Population: Scoped for This Run Only | 10 (1.67%) | ![]() |
Production Metrics Tree: Grade Series 1
Target Profile: 16S-M1907-21J-ONL-A0PTI-TYPE 5
E. Howard Watch Co. (Keystone) Grade Series 1 (All Variations): 6,700 ETP | |||||
16S: 6,700 100.00% 16s, Grade Series 1 |
|||||
16S-M1907: 5,700 85.07% 16s, Grade Series 1, Model 1907 |
Other: 1,000
Other Models or Unclassified |
||||
16S-M1907-21J: 5,500 82.09% 16s, Grade Series 1, Model 1907, 21 Jewels |
Other: 200
Other Jewels or Unclassified |
||||
16S-M1907-21J-ONL: 5,500 82.09% 16s, Grade Series 1, Model 1907, 21 Jewels, Openface/Lever/Nickel |
|||||
16S-M1907-21J-ONL-A0PTI: 5,500 82.09% | |||||
16S-M1907-21J-ONL-A0PTI-TYPE 5: 600 8.96% |
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 5 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.
Milo18 Supporter 7 · September 19, 2022
Serial Number 1114990 was reported as accurate.
esoxhunter Top Contributor Supporter 127 · May 13, 2021
Serial Number 1114463 was reported as accurate.
bunnofnickle 67 · July 3, 2020
Serial Number 1114755 was reported as accurate.
bunnofnickle 67 · July 2, 2020
Serial Number 1114755 was reported as accurate.
roadking 36 · March 2, 2020
Serial Number 1114586 was reported as accurate.
![E. Howard Watch Co. (Keystone) Grade Series 1 Pocket Watch](https://pocketwatchdatabase.com/assets/images/cuts/E.HowardWatchCo.(Keystone)-Series1-16s-Model1907.jpg)
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