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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1070758/movement
Access Date: March 08, 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 8 Pocket Watch
E. Howard Watch Co. (Keystone)

Grade: Series 8

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 1070758 Question Mark
Grade: Series 8 Question Mark
Variation: Going Question Mark
Model: 1908 Question Mark
Estimated Production Year: 1910 Question Mark
Run Quantity: 300 Question Mark
Grade/Model Run: 8 of 16 Question Mark
Grade/Model Total Production: 4,450 Question Mark
Variant Est. Production: 300 (12S-M1908-21J-ONP-A5PT-GOING) Question Mark
Size: 12s Question Mark
Jewels: 21j 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
Double Roller: Yes Question Mark
Barrel: Safety Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted # of Positions: 5 Question Mark
Adjusted to Temperature: Yes Question Mark
Railroad Grade: No Question Mark
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
Adjusted
21 Jewels
Pat'd '08
Five Positions and Temperature
Case: Various Question Mark
Run ID: 177.G8.12S25.121908M23.O106.P142.21J13 Question Mark
Database Version: v52.622 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 13.09 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 45.97 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 0.832% Question Mark
Registry Population:
Scoped for This Run Only		2 (0.67%) Question Mark
Research Note: Some Equipped with Stop-Works
Value Guide
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Production Metrics Tree: Grade Series 8

Target Profile: 12S-M1908-21J-ONP-A5PT-GOING

E. Howard Watch Co. (Keystone) Grade Series 8 (All Variations): 14,400 ETP
12S: 14,400 100.00%
12s, Grade Series 8
12S-M1908: 4,450 30.90%
12s, Grade Series 8, Model 1908		 Other: 9,950
Other Models or Unclassified
12S-M1908-21J: 3,365 23.37%
12s, Grade Series 8, Model 1908, 21 Jewels		 Other: 1,085
Other Jewels or Unclassified
12S-M1908-21J-ONP: 3,265 22.67%
12s, Grade Series 8, Model 1908, 21 Jewels, Openface/Pendant/Nickel 		Other: 100
Other Configs or Unclassified
12S-M1908-21J-ONP-A5PT: 3,265 22.67%
12S-M1908-21J-ONP-A5PT-GOING: 300 2.08% Other: 2,965
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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E. Howard Watch Co. (Keystone) Grade Series 8 Pocket Watch