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 10 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 10

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1279114
Grade: Series 10
Variation: Ser. 10
Model: 1907
Estimated Production Year: 1914
Run Quantity: 2,000
Grade/Model Run: 21 of 23
Grade/Model Total Production: 17,800
Variant Est. Production: 15,550 (16S-M1907-21J-ONL)
Size: 16s
Jewels: 21j
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
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
Case: Various
Run ID: 293.G21.16S181.161907M84.O191.L51.21J45
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
53.29
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
178.08
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
3.445%
Registry Population: 9 (0.45%)
$ Estimated Value (12 Month Change): 10.27% Analyzing 171 Sales
Research Note: #1276211 and #1278810: Reported as Pendant-Set

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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.


Mspehn 2 · December 12, 2021

Serial Number 1278920 was reported as accurate.

Anonymous · September 27, 2021

Serial Number 1278239 was reported as accurate.

CJEmpire3 100 · September 21, 2021

Serial Number 1278381 was reported as accurate.

Anonymous · August 9, 2021

Serial Number 1278776 was reported as accurate.

Bugs16 6 · May 19, 2021

Serial Number 1279145 was reported as accurate.

Anonymous · February 23, 2020

Serial Number 1279210 was reported as accurate.

Anonymous · October 16, 2018

Serial Number 1278673 was reported as accurate.

Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
E. Howard Watch Co. (Keystone) Grade Series 10 Pocket Watch