Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/974238
Access Date: April 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 4
Manufacturer: | E. Howard Watch Co. (Keystone) | |
Manufacturer Location: | Waltham, Massachusetts | |
Movement Serial Number: | 974238 | |
Grade: | Series 4 | |
Model: | 1905 | |
Estimated Production Year: | 1910 | |
Run Quantity: | 1,000 | |
Grade/Model Run: | 20 of 22 | |
Grade/Model Total Production: | 16,610 | |
Variant Est. Production: | 2,500 (16S-M1905-17J-ONL) | |
Size: | 16s | |
Jewels: | 17j | |
Jewel Material: | Ruby & Sapphire | |
Jewel Setting: | Gold Settings (Screw-Set) | |
Movement Configuration: | Openface | |
Movement Finish: | Nickel | |
Finish Pattern: | Checkerboard | |
Movement Setting: | Lever | |
Plate: | 3/4 Plate | |
Double Roller: | Yes | |
Regulator: | Reed | |
Hairspring: | Breguet | |
Pallet Jewel Material: | Sapphire | |
Standard Dial Type: | Double-Sunk | |
Adjusted: | Yes | |
Adjusted to Position: | Yes | |
Adjusted # of Positions: | 5 | |
Adjusted to Temperature: | Yes | |
Adjusted to Isochronism: | Yes | |
Railroad Grade: | Yes | |
Dial Feet Locations: | 10.7, 24.3, 48.9 | |
U.S. Patents: | 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 | |
Case: | Various | |
Run ID: | 102.G20.16S84.161905M76.O57.L5.17J79 | |
Database Version: | v52.235 | |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 39.38 | |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 130.83 | |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.531% | |
Registry Population: | 17 (1.70%) | |
$ Estimated Value (12 Month Change): | -14.01% Analyzing 69 Sales | |
Research Note: #974002: Reported as Pendant-Set, #974238: Verified as Marked "No. 2" with Parallel Pattern
|
Production Metrics Tree: Grade Series 4
Target Profile: 16S-M1905-17J-ONL-A5PTI
E. Howard Watch Co. (Keystone) Grade Series 4 (All Variations): 16,610 ETP | |
16S: 16,610 100.00% 16s, Grade Series 4 |
|
16S-M1905: 16,610 100.00% 16s, Grade Series 4, Model 1905 |
|
16S-M1905-17J: 16,610 100.00% 16s, Grade Series 4, Model 1905, 17 Jewels |
|
16S-M1905-17J-ONL: 2,500 15.05% 16s, Grade Series 4, Model 1905, 17 Jewels, Openface/Lever/Nickel |
Other: 14,110
Other Configs or Unclassified |
16S-M1905-17J-ONL-A5PTI: 2,500 15.05% |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
There are 17 watches in the population registry for this run with 3 images.
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Help Us Help Others By Improving the Database:
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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.
ebsrods Supporter 111 · February 17, 2024
Serial Number 974571 was reported as accurate.
cmdraven 3990 · April 28, 2023
Serial Number 974334 was reported as accurate.
Radiotron Supporter 48 · April 23, 2022
Serial Number 974002 was reported as accurate.
bunnofnickle 67 · August 2, 2020
Serial Number 974692 was reported as accurate.
Harlton Supporter 98 · January 27, 2020
Serial Number 974398 was reported as inaccurate.
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