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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/953163
Access Date: December 19, 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 0 Pocket Watch
E. Howard Watch Co. (Keystone)

Grade: Series 0

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 953163 Question Mark
Grade: Series 0 Question Mark
Variation: Straight Bridge Jeweled Barrel Question Mark
Model: 1907 Question Mark
Estimated Production Year: 1907 Question Mark
Run Quantity: 100 Question Mark
Grade/Model Run: 2 of 28 Question Mark
Grade/Model Total Production: 15,900 Question Mark
Variant Est. Production: 1,250 (16S-M1907-23J-ONP-A5PTI-STRAIGHT BRIDGE JEWELED BARREL) Question Mark
Size: 16s Question Mark
Jewels: 23j Question Mark
Jewel Material: Ruby & Sapphire Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Criss-cross Question Mark
Movement Setting: Pendant Question Mark
Plate: Bridge Plate Question Mark
Bridge Type: Center Question Mark
Double Roller: Yes Question Mark
Barrel: Jeweled Safety 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
U.S. Patents: 796162, 886387, 900183, 978612, 981667, 1062645 Question Mark
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
23 Jewels
Adjusted
Case: Various Question Mark
Run ID: 82.G2.16S59.161907M2.O49.P73.23J4 Question Mark
Database Version: v52.515 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 39.29 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 138.14 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 2.496% Question Mark
Registry Population:
Scoped for This Run Only		2 (2.00%) Question Mark
$ Estimated Value (12 Month Change): -4.66% Analyzing 96 Sales Question Mark
Value Guide
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Production Metrics Tree: Grade Series 0

Target Profile: 16S-M1907-23J-ONP-A5PTI-STRAIGHT BRIDGE JEWELED BARREL

E. Howard Watch Co. (Keystone) Grade Series 0 (All Variations): 16,600 ETP
16S: 16,600 100.00%
16s, Grade Series 0
16S-M1907: 15,900 95.78%
16s, Grade Series 0, Model 1907		 Other: 700
Other Models or Unclassified
16S-M1907-23J: 15,900 95.78%
16s, Grade Series 0, Model 1907, 23 Jewels
16S-M1907-23J-ONP: 1,450 8.73%
16s, Grade Series 0, Model 1907, 23 Jewels, Openface/Pendant/Nickel 		Other: 14,450
Other Configs or Unclassified
16S-M1907-23J-ONP-A5PTI: 1,450 8.73%
16S-M1907-23J-ONP-A5PTI-STRAIGHT BRIDGE JEWELED BARREL: 1,250 7.53% Other: 200
Other Variants or Unclassified

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 2 watches in the population registry for this run with 1 image.
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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.

Anonymous · June 7, 2022

Serial Number 953161 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Pendant
Railroad Grade changed from No to Yes

cjbrem Supporter 954 · August 2, 2020

Serial Number 953163 was reported as inaccurate.

Note: The movement finish on 953163 is not criss-cross.
It is a smooth matte finish.
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Pendant
Railroad Grade changed from No to Yes

cjbrem Supporter 954 · March 15, 2019

Serial Number 953163 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Pendant
Railroad Grade changed from No to Yes
E. Howard Watch Co. (Keystone) Grade Series 0 Pocket Watch