Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/936901
Access Date: June 28, 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:
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E. Howard Watch Co. (Keystone)
Grade: Series 3
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 936901 | |
| Grade: | Series 3 | |
| Model: | 1905 | |
| Estimated Production Year: | 1909 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 26 of 44 | |
| Grade/Model Total Production: | 61,640 | |
| Variant Est. Production: | 32,940 (16S-M1905-17J-HNP) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Gold Settings (Screw-Set) | |
| Movement Configuration: | Hunting | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Circular | |
| Movement Setting: | Pendant | |
| Plate: | 3/4 Plate | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| Pallet Jewel Material: | Sapphire | |
| Standard Dial Type: | Single-Sunk | |
| Adjusted: | Yes | |
| Adjusted to Position: | 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 | |
| Case: | Various | |
| Run ID: | 60.G26.16S42.161905M42.H18.P49.17J45 | |
| Database Version: | v52.350 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 99.17 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 329.63 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 6.375% | |
| Registry Population: | 8 (0.80%) | |
| $ Estimated Value (12 Month Change): | 0% Analyzing 183 Sales | |
Production Metrics Tree: Grade Series 3
Target Profile: 16S-M1905-17J-HNP-A3PTI
| E. Howard Watch Co. (Keystone) Grade Series 3 (All Variations): 61,640 ETP | |
| 16S: 61,640 100.00% 16s, Grade Series 3 |
|
| 16S-M1905: 61,640 100.00% 16s, Grade Series 3, Model 1905 |
|
| 16S-M1905-17J: 61,640 100.00% 16s, Grade Series 3, Model 1905, 17 Jewels |
|
| 16S-M1905-17J-HNP: 32,940 53.44% 16s, Grade Series 3, Model 1905, 17 Jewels, Hunting/Pendant/Nickel |
Other: 28,700
Other Configs or Unclassified |
| 16S-M1905-17J-HNP-A3PTI: 32,940 53.44% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 8 watches in the population registry for this run.
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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 17, 2020
Serial Number 936874 was reported as accurate.
CPRTIME 1 · November 10, 2019
Serial Number 936063 was reported as inaccurate.
terminology but big gear on my watch (936063) is
on bottom with smaller gear on top.
FMBratcher 1 · April 19, 2019
Serial Number 936488 was reported as accurate.
FMBratcher 1 · April 5, 2019
Serial Number 936488 was reported as accurate.
Anonymous · October 31, 2018
Serial Number 936901 was reported as accurate.
