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 0 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 0

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1112898
Grade: Series 0
Variation: Hooked Bridge Jeweled Barrel
Model: 1907
Estimated Production Year: 1912
Run Quantity: 2,000
Grade/Model Run: 18 of 29
Grade/Model Total Production: 16,500
Variant Est. Production: 4,300 (16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL)
Size: 16s
Jewels: 23j
Jewel Material: Ruby & Sapphire
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: Bridge Plate
Bridge Type: Center
Double Roller: Yes
Barrel: Jeweled Safety
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
U.S. Patents: 796162, 886387, 900183, 978612, 981667, 1062645
Case: Various
Run ID: 206.G19.16S135.161907M46.O120.L24.23J22
Database Version: v52.304
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
38.08
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
126.53
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.448%
Registry Population: 18 (0.90%)
$ Estimated Value (12 Month Change): -13.98% Analyzing 89 Sales
Research Note: #1112071: Reported as Marked "No. 0"

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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.


rmwatchandclock Supporter 366 · March 4, 2024

Serial Number 1112052 was reported as accurate.

avpalermo Supporter 573 · October 12, 2023

Serial Number 1112651 was reported as accurate.

Anonymous · February 10, 2023

Serial Number 1112473 was reported as accurate.

Anonymous · October 30, 2022

Serial Number 1113783 was reported as accurate.

Anonymous · October 30, 2022

Serial Number 1113783 was reported as accurate.

Anonymous · October 22, 2022

Serial Number 1112081 was reported as accurate.

Anonymous · August 31, 2022

Serial Number 1112196 was reported as accurate.

tcschung54 5 · April 17, 2022

Serial Number 1112077 was reported as accurate.

Anonymous · March 16, 2022

Serial Number 1112479 was reported as accurate.

Anonymous · January 21, 2022

Serial Number 1112550 was reported as accurate.

Anonymous · August 10, 2021

Serial Number 1112785 was reported as accurate.

Anonymous · August 9, 2021

Serial Number 1112629 was reported as accurate.

Anonymous · February 12, 2021

Serial Number 1112755 was reported as accurate.

Anonymous · October 9, 2020

Serial Number 1112586 was reported as accurate.

dfchong 837 · September 27, 2020

Serial Number 1112578 was reported as accurate.

cjbrem Supporter 554 · July 12, 2020

Serial Number 1112898 was reported as accurate.

kenkim2352 2 · December 24, 2019

Serial Number 1112554 was reported as accurate.

Anonymous · October 31, 2019

Serial Number 1112081 was reported as accurate.

WLBelkriver33 804 · March 9, 2019

Serial Number 1113859 was reported as accurate.

Anonymous · February 18, 2019

Serial Number 1113872 was reported as inaccurate.

Note: #1113872 is LEVER SET. All else is correct.
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

barberr1 67 · January 29, 2019

Serial Number 1112578 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 · November 13, 2018

Serial Number 1112898 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
E. Howard Watch Co. (Keystone) Grade Series 0 Pocket Watch