Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/943575/link
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:
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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: | 943575 | |
| Grade: | Series 3 | |
| Model: | 1905 | |
| Estimated Production Year: | 1909 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 31 of 44 | |
| Grade/Model Total Production: | 61,640 | |
| Variant Est. Production: | 28,700 (16S-M1905-17J-ONP) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Gold Settings (Screw-Set) | |
| Movement Configuration: | Openface | |
| 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: | 66.G31.16S48.161905M48.O39.P55.17J51 | |
| Database Version: | v52.235 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 86.41 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 287.19 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 5.554% | |
| Registry Population: | 14 (1.40%) | |
| $ Estimated Value (12 Month Change): | 1.69% Analyzing 183 Sales | |
|
Research Note: #943925: Reported as Lever-Set
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Production Metrics Tree: Grade Series 3
Target Profile: 16S-M1905-17J-ONP-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-ONP: 28,700 46.56% 16s, Grade Series 3, Model 1905, 17 Jewels, Openface/Pendant/Nickel |
Other: 32,940
Other Configs or Unclassified |
| 16S-M1905-17J-ONP-A3PTI: 28,700 46.56% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 14 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.
PHIL1199 Supporter 958 · April 18, 2024
Serial Number 943827 was reported as accurate.
DocRogan43 Supporter 86 · November 23, 2023
Serial Number 943484 was reported as accurate.
Anonymous · November 12, 2022
Serial Number 943450 was reported as accurate.
Anonymous · November 12, 2022
Serial Number 943450 was reported as accurate.
yamelase 1 · December 18, 2021
Serial Number 943790 was reported as accurate.
rtwatches 943 · May 1, 2020
Serial Number 943288 was reported as accurate.
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