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Movement Specs Production Pop. Registry 13 Value Ad Archive 1 For Sale Sell Your Watch Save to My Collection Print Page Find a Mainspring Find a Balance Staff
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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/914200
Access Date: January 02, 2025

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 2 Pocket Watch
E. Howard Watch Co. (Keystone)

Grade: Series 2

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 914200 Question Mark
Grade: Series 2 Question Mark
Model: 1905 Question Mark
Estimated Production Year: 1906 Question Mark
Run Quantity: 500 Question Mark
Grade/Model Run: 6 of 12 Question Mark
Grade/Model Total Production: 4,750 Question Mark
Variant Est. Production: 2,300 (16S-M1905-17J-HNP) Question Mark
Size: 16s Question Mark
Jewels: 17j Question Mark
Jewel Material: Ruby & Sapphire Question Mark
Jewel Setting: Raised Gold Settings (Screw-Set) Question Mark
Movement Configuration: Hunting Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Parallel Bar (mixed) Question Mark
Movement Setting: Pendant Question Mark
Plate: 3/4 Plate Question Mark
Double Roller: Yes Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Pallet Jewel Material: Sapphire 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: 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 Question Mark
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
Adjusted
17 Jewels
Pat'd. '05
Case: Various Question Mark
Run ID: 50.G6.16S28.161905M27.H11.P42.17J30 Question Mark
Database Version: v52.536 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 6.92 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 24.26 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 0.440% Question Mark
Registry Population:
Scoped for This Run Only		13 (2.60%) Question Mark
Research Note: #914203: Reported as Lever-Set.
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Production Metrics Tree: Grade Series 2

Target Profile: 16S-M1905-17J-HNP-A5PTI

E. Howard Watch Co. (Keystone) Grade Series 2 (All Variations): 11,250 ETP
16S: 11,250 100.00%
16s, Grade Series 2
16S-M1905: 4,750 42.22%
16s, Grade Series 2, Model 1905		 Other: 6,500
Other Models or Unclassified
16S-M1905-17J: 4,750 42.22%
16s, Grade Series 2, Model 1905, 17 Jewels
16S-M1905-17J-HNP: 2,300 20.44%
16s, Grade Series 2, Model 1905, 17 Jewels, Hunting/Pendant/Nickel 		Other: 2,450
Other Configs or Unclassified
16S-M1905-17J-HNP-A5PTI: 2,300 20.44%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
There are 13 watches in the population registry for this run with 2 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.

Anonymous · April 26, 2021

Serial Number 914169 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Railroad Grade changed from No to Yes

Anonymous · February 23, 2021

Serial Number 914137 was reported as accurate.

Changes since this report was submitted:
Railroad Grade changed from No to Yes

Anonymous · April 13, 2020

Serial Number 914169 was reported as inaccurate.

Note: Movement configuration is hunting case
Curator Response: Thanks for the report. The database has been updated accordingly.
Changes since this report was submitted:
Movement Configuration changed from Openface to Hunting
Railroad Grade changed from No to Yes
Plate changed from Bridge to 3/4
E. Howard Watch Co. (Keystone) Grade Series 2 Pocket Watch