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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1320088/link
Access Date: December 20, 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 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: 1320088 Question Mark
Grade: Series 2 Question Mark
Model: 1907 Question Mark
Estimated Production Year: 1917 Question Mark
Run Quantity: 500 Question Mark
Grade/Model Run: 6 of 6 Question Mark
Grade/Model Total Production: 6,500 Question Mark
Variant Est. Production: 1,500 (16S-M1907-17J-ONP) Question Mark
Size: 16s Question Mark
Jewels: 17j Question Mark
Jewel Material: Ruby & Sapphire Question Mark
Jewel Setting: Burnished Jewels Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Pendant Question Mark
Plate: Bridge Plate Question Mark
Bridge Type: Center 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: No Question Mark
Dial Feet Locations: 10.7, 24.3, 48.9 Question Mark
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
17 Jewels
[Empty Circle in Arrow]
Case: Various Question Mark
Run ID: 315.G18.16S200.161907M88.O227.P218.17J143 Question Mark
Database Version: v52.516 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 16.56 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 58.16 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 1.052% Question Mark
Registry Population:
Scoped for This Run Only		2 (0.40%) Question Mark
Value Guide
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Production Metrics Tree: Grade Series 2

Target Profile: 16S-M1907-17J-ONP-A5PTI

E. Howard Watch Co. (Keystone) Grade Series 2 (All Variations): 11,250 ETP
16S: 11,250 100.00%
16s, Grade Series 2
16S-M1907: 6,500 57.78%
16s, Grade Series 2, Model 1907		 Other: 4,750
Other Models or Unclassified
16S-M1907-17J: 6,500 57.78%
16s, Grade Series 2, Model 1907, 17 Jewels
16S-M1907-17J-ONP: 1,500 13.33%
16s, Grade Series 2, Model 1907, 17 Jewels, Openface/Pendant/Nickel 		Other: 5,000
Other Configs or Unclassified
16S-M1907-17J-ONP-A5PTI: 1,500 13.33%

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 · January 23, 2021

Serial Number 1320426 was reported as accurate.

Anonymous · November 16, 2019

Serial Number 1320422 was reported as inaccurate.

Note: Serial number 1320422 is a 16S ,17J, 3-position
(arrow w/circle), Model 1907 , series unknown,
(suspect Series 0 but unmarked) Can upload
picture, just let me know.
Curator Response: Thanks for the report. The auction photos suggest it is a 16-Size Model 1907 Series 2. The database has been updated accordingly.
Changes since this report was submitted:
Grade changed from Series 7 to Series 2
Size changed from 12 to 16
Factory Model changed from 1912 to 1907
Adjusted # Positions changed from 3 to 5
E. Howard Watch Co. (Keystone) Grade Series 2 Pocket Watch