Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/934294
Access Date: April 25, 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:
-Series2-16s-Model1905.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 2
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 934294 | |
| Grade: | Series 2 | |
| Model: | 1905 | |
| Estimated Production Year: | 1909 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 9 of 11 | |
| Grade/Model Total Production: | 4,090 | |
| Variant Est. Production: | 2,000 (16S-M1905-17J-HNP) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Raised Gold Settings (Screw-Set) | |
| Movement Configuration: | Hunting | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Parallel Bar (narrow) | |
| Movement Setting: | Pendant | |
| 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: | 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: | 55.G9.16S37.161905M37.H16.P45.17J40 | |
| Database Version: | v52.245 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 6.47 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 21.42 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.416% | |
| Registry Population: | 17 (1.70%) | |
|
Research Note: #934194: Reported as Openface. #934302: Reported as Marked "Adjusted 5 Positions."
|
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Production Metrics Tree: Grade Series 2
Target Profile: 16S-M1905-17J-HNP-A5PTI
| E. Howard Watch Co. (Keystone) Grade Series 2 (All Variations): 10,590 ETP | |||||
| 16S: 10,590 100.00% 16s, Grade Series 2 |
|||||
| 16S-M1905: 4,090 38.62% 16s, Grade Series 2, Model 1905 |
Other: 6,500
Other Models or Unclassified |
||||
| 16S-M1905-17J: 3,940 37.20% 16s, Grade Series 2, Model 1905, 17 Jewels |
Other: 150
Other Jewels or Unclassified |
||||
| 16S-M1905-17J-HNP: 2,000 18.89% 16s, Grade Series 2, Model 1905, 17 Jewels, Hunting/Pendant/Nickel |
Other: 1,940
Other Configs or Unclassified |
||||
| 16S-M1905-17J-HNP-A5PTI: 2,000 18.89% | |||||
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 2 images.
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Help Us Help Others By Improving the Database:
Does this information describe your movement accurately?
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.
MoatsJustin1 top-contributor 4697 · November 16, 2023
Serial Number 934705 was reported as accurate.
Anonymous · December 14, 2021
Serial Number 934610 was reported as accurate.
PHIL1199 Supporter 960 · November 18, 2021
Serial Number 934596 was reported as accurate.
Walter 63 · February 7, 2020
Serial Number 934873 was reported as accurate.
Anonymous · August 5, 2019
Serial Number 934116 was reported as accurate.
Anonymous · July 21, 2019
Serial Number 934021 was reported as accurate.
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