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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1279030
Access Date: November 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 10 Pocket Watch
E. Howard Watch Co. (Keystone)

Grade: Series 10

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 1279030 Question Mark
Grade: Series 10 Question Mark
Model: 1907 Question Mark
Estimated Production Year: 1914 Question Mark
Run Quantity: 2,000 Question Mark
Grade/Model Run: 19 of 21 Question Mark
Grade/Model Total Production: 17,800 Question Mark
Variant Est. Production: 15,650 (16S-M1907-21J-ONL) 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
Finish Pattern: Parallel Question Mark
Movement Inlay Color: Black Question Mark
Movement Setting: Lever Question Mark
Plate: Bridge Plate Question Mark
Bridge Type: Center Question Mark
Double Roller: Yes Question Mark
Barrel: Going Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Standard Dial Type: Double-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
Dial Feet Locations: 10.7, 24.3, 48.9 Question Mark
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 Question Mark
Run ID: 296.G19.16S187.161907M79.O210.L60.21J45 Question Mark
Database Version: v52.428 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 53.59 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 188.45 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 3.407% Question Mark
Registry Population:
Scoped for This Run Only		9 (0.45%) Question Mark
$ Estimated Value (12 Month Change): 11.54% Analyzing 174 Sales Question Mark
Research Note: #1276211 and #1278810: Reported as Pendant-Set
Value Guide
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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 6 images.
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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 110 · 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