Pocket Watch Database
Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1320088
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1320088
Access Date: April 27, 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-Model1907.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 2
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 1320088 | |
| Grade: | Series 2 | |
| Variation: | Arrow and Empty Circle | |
| Model: | 1907 | |
| Estimated Production Year: | 1917 | |
| Run Quantity: | 500 | |
| Grade/Model Run: | 7 of 7 | |
| Grade/Model Total Production: | 6,500 | |
| Variant Est. Production: | 500 (16S-M1907-17J-ONP-A5PTI-ARROW AND EMPTY CIRCLE) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Raised Gold Settings (Screw-Set) | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Pendant | |
| Plate: | Bridge Plate | |
| Bridge Type: | Center | |
| 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 | |
| Case: | Various | |
| Run ID: | 312.G18.16S193.161907M93.O203.P200.17J137 | |
| Database Version: | v52.245 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 16.56 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 54.95 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 1.064% | |
| Registry Population: | 2 (0.40%) | |
Production Metrics Tree: Grade Series 2
Target Profile: 16S-M1907-17J-ONP-A5PTI-ARROW AND EMPTY CIRCLE
| E. Howard Watch Co. (Keystone) Grade Series 2 (All Variations): 10,590 ETP | |||||
| 16S: 10,590 100.00% 16s, Grade Series 2 |
|||||
| 16S-M1907: 6,500 61.38% 16s, Grade Series 2, Model 1907 |
Other: 4,090
Other Models or Unclassified |
||||
| 16S-M1907-17J: 6,500 61.38% 16s, Grade Series 2, Model 1907, 17 Jewels |
|||||
| 16S-M1907-17J-ONP: 1,700 16.05% 16s, Grade Series 2, Model 1907, 17 Jewels, Openface/Pendant/Nickel |
Other: 4,800
Other Configs or Unclassified |
||||
| 16S-M1907-17J-ONP-A5PTI: 1,700 16.05% | |||||
| 16S-M1907-17J-ONP-A5PTI-ARROW AND EMPTY CIRCLE: 500 4.72% | |||||
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 2 watches in the population registry for this run with 1 image.
|
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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.
Anonymous · January 23, 2021
Serial Number 1320426 was reported as accurate.
Anonymous · November 16, 2019
Serial Number 1320422 was reported as inaccurate.
Note: Serial number 1320422 is a 16S ,17J, 3-position
(arrow w/circle), Model 1907 , series unknown,
(suspect Series 0 but unmarked) Can upload
picture, just let me know.
(arrow w/circle), Model 1907 , series unknown,
(suspect Series 0 but unmarked) Can upload
picture, just let me know.
Curator Response: Thanks for the report. The auction photos suggest it is a 16-Size Model 1907 Series 2. The database has been updated accordingly.
Changes since this report was submitted:
Grade changed from Series 7 to Series 2
Size changed from 12 to 16
Factory Model changed from 1912 to 1907
Adjusted # Positions changed from 3 to 5
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This WatchFrom This Runuploaded by junichi
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