Pocket Watch Database


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 11 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 11

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 1361043 Question Mark
Grade: Series 11 Question Mark
Variation: Arrow.RecoilClick Question Mark
Model: E Question Mark
Estimated Production Year: 1919 Question Mark
Run Quantity: 3,000 Question Mark
Grade/Model Run: 8 of 12 Question Mark
Grade/Model Total Production: 25,100 Question Mark
Variant Est. Production: 10,500 (16S-ME-21J-ONL-A5PTI-ARROW.RECOILCLICK) Question Mark
Size: 16s Question Mark
Jewels: 21j Question Mark
Jewel Setting: Burnished Jewels Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: Bridge Plate Question Mark
Regulator: Micrometric Question Mark
Hairspring: Breguet Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Adjusted # of Positions: 5 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: Yes Question Mark
Railroad Grade Classification: Class A Question Mark
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
Railroad Chronometer
Series 11
[Star in Arrow]
21 Jewels
R.R. Adjustment
Temperature
Five Positions
Pat'd '08
Case: Various Question Mark
Run ID: 317.G8.16S201.M8.O229.L70.21J52 Question Mark
Database Version: v52.528 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
75.57 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
265.78 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
4.801% Question Mark
Registry Population:
Scoped for This Run Only
11 (0.37%) Question Mark
$ Estimated Value (12 Month Change): -1.43% Analyzing 208 Sales Question Mark

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.


joe4646 Supporter 43 · July 2, 2024

Serial Number 1361212 was reported as accurate.

cjbrem Supporter 965 · April 6, 2024

Serial Number 1360152 was reported as accurate.

Anonymous · April 6, 2024

Serial Number 1360152 was reported as accurate.

Anonymous · February 16, 2024

Serial Number 1360852 was reported as accurate.

Anonymous · February 14, 2024

Serial Number 1360517 was reported as accurate.

Anonymous · August 28, 2023

Serial Number 1362996 was reported as accurate.

Anonymous · July 27, 2022

Serial Number 1362859 was reported as accurate.

Mobilaero Top Contributor Supporter 307 · September 23, 2021

Serial Number 1362755 was reported as accurate.

Anonymous · August 9, 2021

Serial Number 1362730 was reported as inaccurate.

Note: series 11
16 s
21 jewels
Curator Response: Thanks for the report. The database has been updated accordingly.
Changes since this report was submitted:
Grade changed from ? to Series 11
Railroad Grade changed from No to Yes

Anonymous · June 6, 2021

Serial Number 1361602 was reported as accurate.

Anonymous · May 16, 2021

Serial Number 1360454 was reported as accurate.

Kmorgan 9 · December 19, 2020

Serial Number 1361626 was reported as accurate.

Anonymous · November 23, 2020

Serial Number 1361639 was reported as accurate.

Anonymous · August 15, 2020

Serial Number 1360679 was reported as accurate.

Roberthunigan 25 · August 15, 2020

Serial Number 1360835 was reported as accurate.

KANDYMAN2014 14 · August 7, 2020

Serial Number 1360646 was reported as accurate.

Anonymous · May 11, 2020

Serial Number 1360615 was reported as accurate.

Anonymous · April 22, 2020

Serial Number 1360611 was reported as accurate.

Anonymous · April 21, 2020

Serial Number 1362297 was reported as accurate.

Roberthunigan 25 · April 15, 2020

Serial Number 1360835 was reported as accurate.

Kaylyngrace1 4 · March 31, 2020

Serial Number 1360835 was reported as accurate.

Kaylyngrace1 4 · March 27, 2020

Serial Number 1360835 was reported as accurate.

Anonymous · January 22, 2020

Serial Number 1360610 was reported as accurate.

Anonymous · August 9, 2019

Serial Number 1362695 was reported as accurate.

Anonymous · August 9, 2019

Serial Number 1362695 was reported as accurate.

Anonymous · March 19, 2019

Serial Number 1360694 was reported as accurate.

WLBelkriver33 804 · March 19, 2019

Serial Number 1360694 was reported as accurate.

Anonymous · December 29, 2018

Serial Number 1360127 was reported as accurate.

Anonymous · December 25, 2018

Serial Number 1361367 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 11 Pocket Watch