Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1124817
Access Date: December 30, 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 9
Manufacturer: | E. Howard Watch Co. (Keystone) | |
Manufacturer Location: | Waltham, Massachusetts | |
Movement Serial Number: | 1124817 | |
Grade: | Series 9 | |
Model: | 1905 | |
Estimated Production Year: | 1912 | |
Run Quantity: | 3,000 | |
Grade/Model Run: | 10 of 14 | |
Grade/Model Total Production: | 15,610 | |
Variant Est. Production: | 10,500 (16S-M1905-17J-ONP) | |
Size: | 16s | |
Jewels: | 17j | |
Jewel Setting: | Gold Settings (Screw-Set) | |
Movement Configuration: | Openface | |
Movement Finish: | Nickel | |
Finish Pattern: | Checkerboard | |
Movement Setting: | Pendant | |
Plate: | 3/4 Plate | |
Double Roller: | Yes | |
Regulator: | Reed | |
Hairspring: | Breguet | |
Standard Dial Type: | Single-Sunk | |
Adjusted: | Yes | |
Adjusted # of Positions: | 3 | |
Adjusted to Temperature: | Yes | |
Adjusted to Isochronism: | Yes | |
Railroad Grade: | No | |
Dial Feet Locations: | 10.7, 24.3, 48.9 | |
U.S. Patents: | 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 | |
Movement Markings: | E. Howard Watch Co. Boston U.S.A. Adjusted 17 Jewels Pat'd '05 |
|
Case: | Various | |
Run ID: | 228.G10.16S153.161905M94.O150.P168.17J119 | |
Database Version: | v52.529 | |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 34.62 | |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 121.72 | |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.199% | |
Registry Population: Scoped for This Run Only | 73 (2.43%) | |
Research Note: #1125911: Reported as Lever-Set.
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Production Metrics Tree: Grade Series 9
Target Profile: 16S-M1905-17J-ONP-A3PTI
E. Howard Watch Co. (Keystone) Grade Series 9 (All Variations): 15,610 ETP | |
16S: 15,610 100.00% 16s, Grade Series 9 |
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16S-M1905: 15,610 100.00% 16s, Grade Series 9, Model 1905 |
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16S-M1905-17J: 15,610 100.00% 16s, Grade Series 9, Model 1905, 17 Jewels |
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16S-M1905-17J-ONP: 10,500 67.26% 16s, Grade Series 9, Model 1905, 17 Jewels, Openface/Pendant/Nickel |
Other: 5,110
Other Configs or Unclassified |
16S-M1905-17J-ONP-A3PTI: 10,500 67.26% |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
There are 73 watches in the population registry for this run with 3 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.
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This WatchFrom This Run
uploaded by thodge0001
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From This Run
uploaded by esoxhunter
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From This Run
uploaded by esoxhunter
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Image Source/Credit: eBay Auction
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Image Source/Credit: eBay Auction
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uploaded by nicnic
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Image Source/Credit: eBay Auction
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uploaded by pocketwatch101
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uploaded by Rickglick1
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uploaded by esoxhunter